121210111112210 has 16 divisors (see below), whose sum is σ = 218214678658392. Its totient is φ = 48475938076800.

The previous prime is 121210111112191. The next prime is 121210111112231. The reversal of 121210111112210 is 12211111012121.

121210111112210 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 101750534599609 + 19459576512601 = 10087147^2 + 4411301^2 .

It is a super-2 number, since 2×121210111112210² (a number of 29 digits) contains 22 as substring.

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, 1013233211 + ... + 1013352830.

Almost surely, 2^{121210111112210} is an apocalyptic number.

121210111112210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

121210111112210 is a deficient number, since it is larger than the sum of its proper divisors (97004567546182).

121210111112210 is a wasteful number, since it uses less digits than its factorization.

121210111112210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2026592029.

The product of its (nonzero) digits is 16, while the sum is 17.

Adding to 121210111112210 its reverse (12211111012121), we get a palindrome (133421222124331).

The spelling of 121210111112210 in words is "one hundred twenty-one trillion, two hundred ten billion, one hundred eleven million, one hundred twelve thousand, two hundred ten".