121223231112210 has 32 divisors (see below), whose sum is σ = 290951628963840. Its totient is φ = 32324431152768.

The previous prime is 121223231112209. The next prime is 121223231112211. The reversal of 121223231112210 is 12211132322121.

It is an interprime number because it is at equal distance from previous prime (121223231112209) and next prime (121223231112211).

It is a super-2 number, since 2×121223231112210² (a number of 29 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (121223231112211) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 109679122 + ... + 110778861.

It is an arithmetic number, because the mean of its divisors is an integer number (9092238405120).

Almost surely, 2^{121223231112210} is an apocalyptic number.

121223231112210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

121223231112210 is an abundant number, since it is smaller than the sum of its proper divisors (169728397851630).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

121223231112210 is a wasteful number, since it uses less digits than its factorization.

121223231112210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 220476322.

The product of its (nonzero) digits is 576, while the sum is 24.

Adding to 121223231112210 its reverse (12211132322121), we get a palindrome (133434363434331).

The spelling of 121223231112210 in words is "one hundred twenty-one trillion, two hundred twenty-three billion, two hundred thirty-one million, one hundred twelve thousand, two hundred ten".