21201100211210 has 16 divisors (see below), whose sum is σ = 38330094835296. Its totient is φ = 8443081316688.

The previous prime is 21201100211189. The next prime is 21201100211321. The reversal of 21201100211210 is 1211200110212.

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, 4669843592 + ... + 4669848131.

It is an arithmetic number, because the mean of its divisors is an integer number (2395630927206).

Almost surely, 2^{21201100211210} is an apocalyptic number.

21201100211210 is a deficient number, since it is larger than the sum of its proper divisors (17128994624086).

21201100211210 is a wasteful number, since it uses less digits than its factorization.

21201100211210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9339691957.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 21201100211210 its reverse (1211200110212), we get a palindrome (22412300321422).

The spelling of 21201100211210 in words is "twenty-one trillion, two hundred one billion, one hundred million, two hundred eleven thousand, two hundred ten".