22111102121040 has 60 divisors (see below), whose sum is σ = 74256451292244. Its totient is φ = 5896293898752.

The previous prime is 22111102121039. The next prime is 22111102121131. The reversal of 22111102121040 is 4012120111122.

It can be written as a sum of positive squares in 2 ways, for example, as 15326473329216 + 6784628791824 = 3914904^2 + 2604732^2 .

It is a tau number, because it is divible by the number of its divisors (60).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 15354931309 + ... + 15354932748.

Almost surely, 2^{22111102121040} is an apocalyptic number.

22111102121040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22111102121040 is an abundant number, since it is smaller than the sum of its proper divisors (52145349171204).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

22111102121040 is a wasteful number, since it uses less digits than its factorization.

22111102121040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30709864076 (or 30709864067 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

Adding to 22111102121040 its reverse (4012120111122), we get a palindrome (26123222232162).

The spelling of 22111102121040 in words is "twenty-two trillion, one hundred eleven billion, one hundred two million, one hundred twenty-one thousand, forty".