22102110021 has 16 divisors (see below), whose sum is σ = 30606755840. Its totient is φ = 14171934960.

The previous prime is 22102109999. The next prime is 22102110077. The reversal of 22102110021 is 12001120122.

It is not a de Polignac number, because 22102110021 - 2⁷ = 22102109893 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 22102109979 and 22102110006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22102510021) 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, 713851 + ... + 744168.

It is an arithmetic number, because the mean of its divisors is an integer number (1912922240).

Almost surely, 2^22102110021 is an apocalyptic number.

It is an amenable number.

22102110021 is a deficient number, since it is larger than the sum of its proper divisors (8504645819).

22102110021 is a wasteful number, since it uses less digits than its factorization.

22102110021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1458216.

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

Adding to 22102110021 its reverse (12001120122), we get a palindrome (34103230143).

The spelling of 22102110021 in words is "twenty-two billion, one hundred two million, one hundred ten thousand, twenty-one".