121323231020310 has 128 divisors (see below), whose sum is σ = 320822696706048. Its totient is φ = 29119039152000.

The previous prime is 121323231020291. The next prime is 121323231020357. The reversal of 121323231020310 is 13020132323121.

It is a super-2 number, since 2×121323231020310² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 8738077 + ... + 17860583.

It is an arithmetic number, because the mean of its divisors is an integer number (2506427318016).

Almost surely, 2^{121323231020310} is an apocalyptic number.

121323231020310 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 121323231020310, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (160411348353024).

121323231020310 is an abundant number, since it is smaller than the sum of its proper divisors (199499465685738).

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

121323231020310 is a wasteful number, since it uses less digits than its factorization.

121323231020310 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9122930.

The product of its (nonzero) digits is 1296, while the sum is 24.

Adding to 121323231020310 its reverse (13020132323121), we get a palindrome (134343363343431).

The spelling of 121323231020310 in words is "one hundred twenty-one trillion, three hundred twenty-three billion, two hundred thirty-one million, twenty thousand, three hundred ten".