123121333002 has 64 divisors (see below), whose sum is σ = 266212362240. Its totient is φ = 37835683200.

The previous prime is 123121332991. The next prime is 123121333031. The reversal of 123121333002 is 200333121321.

It is a self number, because there is not a number n which added to its sum of digits gives 123121333002.

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, 1282102 + ... + 1374782.

It is an arithmetic number, because the mean of its divisors is an integer number (4159568160).

Almost surely, 2^123121333002 is an apocalyptic number.

123121333002 is an abundant number, since it is smaller than the sum of its proper divisors (143091029238).

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

123121333002 is a wasteful number, since it uses less digits than its factorization.

123121333002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 93019.

The product of its (nonzero) digits is 648, while the sum is 21.

Adding to 123121333002 its reverse (200333121321), we get a palindrome (323454454323).

The spelling of 123121333002 in words is "one hundred twenty-three billion, one hundred twenty-one million, three hundred thirty-three thousand, two".