21211200211102 has 32 divisors (see below), whose sum is σ = 34784117867520. Its totient is φ = 9620657129280.

The previous prime is 21211200211043. The next prime is 21211200211111. The reversal of 21211200211102 is 20111200211212.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 171359778 + ... + 171483514.

It is an arithmetic number, because the mean of its divisors is an integer number (1087003683360).

Almost surely, 2^{21211200211102} is an apocalyptic number.

21211200211102 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

21211200211102 is a deficient number, since it is larger than the sum of its proper divisors (13572917656418).

21211200211102 is a wasteful number, since it uses less digits than its factorization.

21211200211102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 140496.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 21211200211102 its reverse (20111200211212), we get a palindrome (41322400422314).

The spelling of 21211200211102 in words is "twenty-one trillion, two hundred eleven billion, two hundred million, two hundred eleven thousand, one hundred two".