121312002000 has 160 divisors (see below), whose sum is σ = 446982891264. Its totient is φ = 27728448000.

The previous prime is 121312001983. The next prime is 121312002011. The reversal of 121312002000 is 200213121.

121312002000 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a congruent number.

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, 1402191 + ... + 1486190.

Almost surely, 2^121312002000 is an apocalyptic number.

121312002000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121312002000 is an abundant number, since it is smaller than the sum of its proper divisors (325670889264).

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

121312002000 is a wasteful number, since it uses less digits than its factorization.

121312002000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2888414 (or 2888398 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 12.

Adding to 121312002000 its reverse (200213121), we get a palindrome (121512215121).

The spelling of 121312002000 in words is "one hundred twenty-one billion, three hundred twelve million, two thousand".