21211100112010 has 32 divisors (see below), whose sum is σ = 38828995945920. Its totient is φ = 8340228379392.

The previous prime is 21211100111969. The next prime is 21211100112043. The reversal of 21211100112010 is 1021100111212.

It is a happy 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, 11349042 + ... + 13085218.

It is an arithmetic number, because the mean of its divisors is an integer number (1213406123310).

Almost surely, 2^{21211100112010} is an apocalyptic number.

21211100112010 is a deficient number, since it is larger than the sum of its proper divisors (17617895833910).

21211100112010 is a wasteful number, since it uses less digits than its factorization.

21211100112010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1756950.

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 21211100112010 its reverse (1021100111212), we get a palindrome (22232200223222).

The spelling of 21211100112010 in words is "twenty-one trillion, two hundred eleven billion, one hundred million, one hundred twelve thousand, ten".