101221111111210 has 32 divisors (see below), whose sum is σ = 191923484875200. Its totient is φ = 38330250393600.

The previous prime is 101221111111199. The next prime is 101221111111249. The reversal of 101221111111210 is 12111111122101.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 188782216 + ... + 189317635.

It is an arithmetic number, because the mean of its divisors is an integer number (5997608902350).

Almost surely, 2^{101221111111210} is an apocalyptic number.

101221111111210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

101221111111210 is a deficient number, since it is larger than the sum of its proper divisors (90702373763990).

101221111111210 is a wasteful number, since it uses less digits than its factorization.

101221111111210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 378101286.

The product of its (nonzero) digits is 8, while the sum is 16.

Adding to 101221111111210 its reverse (12111111122101), we get a palindrome (113332222233311).

The spelling of 101221111111210 in words is "one hundred one trillion, two hundred twenty-one billion, one hundred eleven million, one hundred eleven thousand, two hundred ten".