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1222031234213 = 11378771372913
BaseRepresentation
bin10001110010000110101…
…111001101010010100101
311022211021110100202201222
4101302012233031102211
5130010204443443323
62333220550230125
7154201034050406
oct21620657152245
94284243322658
101222031234213
11431295856479
12178a07955345
138b310a5467a
144320a4b99ad
1521bc3e389c8
hex11c86bcd4a5

1222031234213 has 8 divisors (see below), whose sum is σ = 1233003080088. Its totient is φ = 1211062150144.

The previous prime is 1222031234191. The next prime is 1222031234269. The reversal of 1222031234213 is 3124321302221.

It can be written as a sum of positive squares in 4 ways, for example, as 26732904004 + 1195298330209 = 163502^2 + 1093297^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1222031234213 - 214 = 1222031217829 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1222031234713) 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, 203645 + ... + 1576557.

It is an arithmetic number, because the mean of its divisors is an integer number (154125385011).

Almost surely, 21222031234213 is an apocalyptic number.

It is an amenable number.

1222031234213 is a deficient number, since it is larger than the sum of its proper divisors (10971845875).

1222031234213 is a wasteful number, since it uses less digits than its factorization.

1222031234213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1380903.

The product of its (nonzero) digits is 3456, while the sum is 26.

Adding to 1222031234213 its reverse (3124321302221), we get a palindrome (4346352536434).

The spelling of 1222031234213 in words is "one trillion, two hundred twenty-two billion, thirty-one million, two hundred thirty-four thousand, two hundred thirteen".

Divisors: 1 113 7877 890101 1372913 155139169 10814435701 1222031234213