21010022097 has 16 divisors (see below), whose sum is σ = 28119581952. Its totient is φ = 13953638160.

The previous prime is 21010022063. The next prime is 21010022123. The reversal of 21010022097 is 79022001012.

It is not a de Polignac number, because 21010022097 - 2²⁸ = 20741586641 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21010022197) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1409598 + ... + 1424424.

It is an arithmetic number, because the mean of its divisors is an integer number (1757473872).

Almost surely, 2^21010022097 is an apocalyptic number.

It is an amenable number.

21010022097 is a deficient number, since it is larger than the sum of its proper divisors (7109559855).

21010022097 is a wasteful number, since it uses less digits than its factorization.

21010022097 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16588.

The product of its (nonzero) digits is 504, while the sum is 24.

The spelling of 21010022097 in words is "twenty-one billion, ten million, twenty-two thousand, ninety-seven".