21023001102 has 16 divisors (see below), whose sum is σ = 42578231040. Its totient is φ = 6918962232.

The previous prime is 21023001073. The next prime is 21023001119. The reversal of 21023001102 is 20110032012.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22175688 + ... + 22176635.

It is an arithmetic number, because the mean of its divisors is an integer number (2661139440).

Almost surely, 2^21023001102 is an apocalyptic number.

21023001102 is an abundant number, since it is smaller than the sum of its proper divisors (21555229938).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21023001102 is a wasteful number, since it uses less digits than its factorization.

21023001102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44352407.

The product of its (nonzero) digits is 24, while the sum is 12.

Adding to 21023001102 its reverse (20110032012), we get a palindrome (41133033114).

The spelling of 21023001102 in words is "twenty-one billion, twenty-three million, one thousand, one hundred two".