22110120021 has 16 divisors (see below), whose sum is σ = 32231822400. Its totient is φ = 13370219520.

The previous prime is 22110120001. The next prime is 22110120029. The reversal of 22110120021 is 12002101122.

It is not a de Polignac number, because 22110120021 - 2⁷ = 22110119893 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 22110119979 and 22110120006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22110120029) 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, 731290 + ... + 760923.

It is an arithmetic number, because the mean of its divisors is an integer number (2014488900).

Almost surely, 2^22110120021 is an apocalyptic number.

It is an amenable number.

22110120021 is a deficient number, since it is larger than the sum of its proper divisors (10121702379).

22110120021 is a wasteful number, since it uses less digits than its factorization.

22110120021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1492676.

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 22110120021 its reverse (12002101122), we get a palindrome (34112221143).

The spelling of 22110120021 in words is "twenty-two billion, one hundred ten million, one hundred twenty thousand, twenty-one".