22102111551 has 16 divisors (see below), whose sum is σ = 33406701440. Its totient is φ = 12885441120.

The previous prime is 22102111547. The next prime is 22102111597. The reversal of 22102111551 is 15511120122.

It is not a de Polignac number, because 22102111551 - 2² = 22102111547 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 (22102111511) 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, 14912965 + ... + 14914446.

It is an arithmetic number, because the mean of its divisors is an integer number (2087918840).

Almost surely, 2^22102111551 is an apocalyptic number.

22102111551 is a deficient number, since it is larger than the sum of its proper divisors (11304589889).

22102111551 is a wasteful number, since it uses less digits than its factorization.

22102111551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29827446.

The product of its (nonzero) digits is 200, while the sum is 21.

Adding to 22102111551 its reverse (15511120122), we get a palindrome (37613231673).

The spelling of 22102111551 in words is "twenty-two billion, one hundred two million, one hundred eleven thousand, five hundred fifty-one".