21213221100110 has 16 divisors (see below), whose sum is σ = 41121013209696. Its totient is φ = 7832573944608.

The previous prime is 21213221100103. The next prime is 21213221100161. The reversal of 21213221100110 is 1100112231212.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 81589311794 + ... + 81589312053.

It is an arithmetic number, because the mean of its divisors is an integer number (2570063325606).

Almost surely, 2^{21213221100110} is an apocalyptic number.

21213221100110 is a deficient number, since it is larger than the sum of its proper divisors (19907792109586).

21213221100110 is a wasteful number, since it uses less digits than its factorization.

21213221100110 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 163178623867.

The product of its (nonzero) digits is 48, while the sum is 17.

Adding to 21213221100110 its reverse (1100112231212), we get a palindrome (22313333331322).

The spelling of 21213221100110 in words is "twenty-one trillion, two hundred thirteen billion, two hundred twenty-one million, one hundred thousand, one hundred ten".