21200020001102 has 16 divisors (see below), whose sum is σ = 31879753016400. Its totient is φ = 10573436361600.

The previous prime is 21200020001099. The next prime is 21200020001131. The reversal of 21200020001102 is 20110002000212.

It is a happy number.

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, 88829849 + ... + 89068187.

It is an arithmetic number, because the mean of its divisors is an integer number (1992484563525).

Almost surely, 2^{21200020001102} is an apocalyptic number.

21200020001102 is a deficient number, since it is larger than the sum of its proper divisors (10679733015298).

21200020001102 is a wasteful number, since it uses less digits than its factorization.

21200020001102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 349651.

The product of its (nonzero) digits is 16, while the sum is 11.

Adding to 21200020001102 its reverse (20110002000212), we get a palindrome (41310022001314).

The spelling of 21200020001102 in words is "twenty-one trillion, two hundred billion, twenty million, one thousand, one hundred two".