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22122201131 = 128231725197
BaseRepresentation
bin10100100110100101…
…100000000000101011
32010002201211020220122
4110212211200000223
5330301240414011
614055055313455
71412131415132
oct244645400053
963081736818
1022122201131
119422451158
12435481b88b
132117269a54
1410dc0b0919
1589721b3db
hex52696002b

22122201131 has 4 divisors (see below), whose sum is σ = 22123939152. Its totient is φ = 22120463112.

The previous prime is 22122201119. The next prime is 22122201181. The reversal of 22122201131 is 13110222122.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 22122201131 - 218 = 22121938987 is a prime.

It is a super-2 number, since 2×221222011312 (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22122201181) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 849776 + ... + 875421.

It is an arithmetic number, because the mean of its divisors is an integer number (5530984788).

Almost surely, 222122201131 is an apocalyptic number.

22122201131 is a deficient number, since it is larger than the sum of its proper divisors (1738021).

22122201131 is a wasteful number, since it uses less digits than its factorization.

22122201131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1738020.

The product of its (nonzero) digits is 96, while the sum is 17.

Adding to 22122201131 its reverse (13110222122), we get a palindrome (35232423253).

The spelling of 22122201131 in words is "twenty-two billion, one hundred twenty-two million, two hundred one thousand, one hundred thirty-one".

Divisors: 1 12823 1725197 22122201131