121323323123210 has 64 divisors (see below), whose sum is σ = 236092906375200. Its totient is φ = 44622584128512.

The previous prime is 121323323123209. The next prime is 121323323123273. The reversal of 121323323123210 is 12321323323121.

It can be written as a sum of positive squares in 16 ways, for example, as 2720616026041 + 118602707097169 = 1649429^2 + 10890487^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 219230336 + ... + 219783044.

Almost surely, 2^{121323323123210} is an apocalyptic number.

121323323123210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

121323323123210 is a deficient number, since it is larger than the sum of its proper divisors (114769583251990).

121323323123210 is a wasteful number, since it uses less digits than its factorization.

121323323123210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 559275.

The product of its (nonzero) digits is 7776, while the sum is 29.

Adding to 121323323123210 its reverse (12321323323121), we get a palindrome (133644646446331).

The spelling of 121323323123210 in words is "one hundred twenty-one trillion, three hundred twenty-three billion, three hundred twenty-three million, one hundred twenty-three thousand, two hundred ten".