22121110422125 has 128 divisors (see below), whose sum is σ = 33165510303744. Its totient is φ = 14516197920000.

The previous prime is 22121110422097. The next prime is 22121110422143. The reversal of 22121110422125 is 52122401112122.

It is a happy number.

It is not a de Polignac number, because 22121110422125 - 2²⁰ = 22121109373549 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 22121110422094 and 22121110422103.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 681325142 + ... + 681357608.

It is an arithmetic number, because the mean of its divisors is an integer number (259105549248).

Almost surely, 2^{22121110422125} is an apocalyptic number.

22121110422125 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

22121110422125 is a deficient number, since it is larger than the sum of its proper divisors (11044399881619).

22121110422125 is a wasteful number, since it uses less digits than its factorization.

22121110422125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33364 (or 33354 counting only the distinct ones).

The product of its (nonzero) digits is 1280, while the sum is 26.

Adding to 22121110422125 its reverse (52122401112122), we get a palindrome (74243511534247).

The spelling of 22121110422125 in words is "twenty-two trillion, one hundred twenty-one billion, one hundred ten million, four hundred twenty-two thousand, one hundred twenty-five".