22101120021 has 32 divisors (see below), whose sum is σ = 30310156800. Its totient is φ = 14320152000.

The previous prime is 22101120001. The next prime is 22101120031. The reversal of 22101120021 is 12002110122.

It is not a de Polignac number, because 22101120021 - 2¹⁰ = 22101118997 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 22101119979 and 22101120006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22101120001) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5497150 + ... + 5501168.

It is an arithmetic number, because the mean of its divisors is an integer number (947192400).

Almost surely, 2^22101120021 is an apocalyptic number.

It is an amenable number.

22101120021 is a deficient number, since it is larger than the sum of its proper divisors (8209036779).

22101120021 is a wasteful number, since it uses less digits than its factorization.

22101120021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4449.

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

Adding to 22101120021 its reverse (12002110122), we get a palindrome (34103230143).

The spelling of 22101120021 in words is "twenty-two billion, one hundred one million, one hundred twenty thousand, twenty-one".