121323120212310 has 128 divisors (see below), whose sum is σ = 305060714956800. Its totient is φ = 30838590881280.

The previous prime is 121323120212291. The next prime is 121323120212347. The reversal of 121323120212310 is 13212021323121.

It is a super-2 number, since 2×121323120212310² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 696903897 + ... + 697077963.

It is an arithmetic number, because the mean of its divisors is an integer number (2383286835600).

Almost surely, 2^{121323120212310} is an apocalyptic number.

121323120212310 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 121323120212310, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (152530357478400).

121323120212310 is an abundant number, since it is smaller than the sum of its proper divisors (183737594744490).

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

121323120212310 is a wasteful number, since it uses less digits than its factorization.

121323120212310 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 184326.

The product of its (nonzero) digits is 864, while the sum is 24.

Adding to 121323120212310 its reverse (13212021323121), we get a palindrome (134535141535431).

The spelling of 121323120212310 in words is "one hundred twenty-one trillion, three hundred twenty-three billion, one hundred twenty million, two hundred twelve thousand, three hundred ten".