123121332033320 has 16 divisors (see below), whose sum is σ = 277022997075060. Its totient is φ = 49248532813312.

The previous prime is 123121332033313. The next prime is 123121332033347. The reversal of 123121332033320 is 23330233121321.

It can be written as a sum of positive squares in 2 ways, for example, as 103570555549444 + 19550776483876 = 10176962^2 + 4421626^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1539016650377 + ... + 1539016650456.

Almost surely, 2^{123121332033320} is an apocalyptic number.

123121332033320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

123121332033320 is an abundant number, since it is smaller than the sum of its proper divisors (153901665041740).

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

123121332033320 is a wasteful number, since it uses less digits than its factorization.

123121332033320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3078033300844 (or 3078033300840 counting only the distinct ones).

The product of its (nonzero) digits is 11664, while the sum is 29.

Adding to 123121332033320 its reverse (23330233121321), we get a palindrome (146451565154641).

The spelling of 123121332033320 in words is "one hundred twenty-three trillion, one hundred twenty-one billion, three hundred thirty-two million, thirty-three thousand, three hundred twenty".