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2220222131111 = 7179990139979
BaseRepresentation
bin100000010011101111100…
…011010010101110100111
321212020210002122020022102
4200103233203102232213
5242334003331143421
64415542253322315
7316256113506365
oct40235743225647
97766702566272
102220222131111
1178665556a436
122ba363a9639b
1313149b2938aa
147966055a635
153cb4694960b
hex204ef8d2ba7

2220222131111 has 16 divisors (see below), whose sum is σ = 2280280089600. Its totient is φ = 2160970812000.

The previous prime is 2220222131089. The next prime is 2220222131117. The reversal of 2220222131111 is 1111312220222.

It is a cyclic number.

It is not a de Polignac number, because 2220222131111 - 226 = 2220155022247 is a prime.

It is a super-2 number, since 2×22202221311112 (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2220222131117) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 55514720 + ... + 55554698.

It is an arithmetic number, because the mean of its divisors is an integer number (142517505600).

Almost surely, 22220222131111 is an apocalyptic number.

2220222131111 is a deficient number, since it is larger than the sum of its proper divisors (60057958489).

2220222131111 is an equidigital number, since it uses as much as digits as its factorization.

2220222131111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50030.

The product of its (nonzero) digits is 192, while the sum is 20.

Adding to 2220222131111 its reverse (1111312220222), we get a palindrome (3331534351333).

The spelling of 2220222131111 in words is "two trillion, two hundred twenty billion, two hundred twenty-two million, one hundred thirty-one thousand, one hundred eleven".

Divisors: 1 71 79 5609 9901 39979 702971 782179 2838509 3158341 55534709 224242211 395832079 28104077609 31270734241 2220222131111