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2211311121112 = 231983175278307
BaseRepresentation
bin100000001011011100011…
…010011111001011011000
321211101210002000000122001
4200023130122133023120
5242212231121333422
64411510131410344
7315522231253402
oct40133432371330
97741702000561
102211311121112
117828a252a765
122b86977539b4
131306ab0a0902
1479056cabb72
153c7c449a227
hex202dc69f2d8

2211311121112 has 32 divisors (see below), whose sum is σ = 4417013361600. Its totient is φ = 1034843118624.

The previous prime is 2211311121059. The next prime is 2211311121113. The reversal of 2211311121112 is 2111211131122.

It is a super-2 number, since 2×22113111211122 (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is a self number, because there is not a number n which added to its sum of digits gives 2211311121112.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2211311121113) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 87626538 + ... + 87651769.

It is an arithmetic number, because the mean of its divisors is an integer number (138031667550).

Almost surely, 22211311121112 is an apocalyptic number.

It is an amenable number.

2211311121112 is a deficient number, since it is larger than the sum of its proper divisors (2205702240488).

2211311121112 is a wasteful number, since it uses less digits than its factorization.

2211311121112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 175278415 (or 175278411 counting only the distinct ones).

The product of its digits is 48, while the sum is 19.

Adding to 2211311121112 its reverse (2111211131122), we get a palindrome (4322522252234).

The spelling of 2211311121112 in words is "two trillion, two hundred eleven billion, three hundred eleven million, one hundred twenty-one thousand, one hundred twelve".

Divisors: 1 2 4 8 19 38 76 83 152 166 332 664 1577 3154 6308 12616 175278307 350556614 701113228 1402226456 3330287833 6660575666 13321151332 14548099481 26642302664 29096198962 58192397924 116384795848 276413890139 552827780278 1105655560556 2211311121112