21022200102102 has 64 divisors (see below), whose sum is σ = 45253516964544. Its totient is φ = 6486204579840.

The previous prime is 21022200102049. The next prime is 21022200102103. The reversal of 21022200102102 is 20120100222012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21022200102103) 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, 46546038 + ... + 46995510.

It is an arithmetic number, because the mean of its divisors is an integer number (707086202571).

Almost surely, 2^{21022200102102} is an apocalyptic number.

21022200102102 is an abundant number, since it is smaller than the sum of its proper divisors (24231316862442).

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

21022200102102 is a wasteful number, since it uses less digits than its factorization.

21022200102102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 457073.

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 21022200102102 its reverse (20120100222012), we get a palindrome (41142300324114).

The spelling of 21022200102102 in words is "twenty-one trillion, twenty-two billion, two hundred million, one hundred two thousand, one hundred two".