120212121000 has 64 divisors (see below), whose sum is σ = 375061826880. Its totient is φ = 32056564800.

The previous prime is 120212120999. The next prime is 120212121019. The reversal of 120212121000 is 121212021.

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

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20032354 + ... + 20038353.

It is an arithmetic number, because the mean of its divisors is an integer number (5860341045).

Almost surely, 2^120212121000 is an apocalyptic number.

120212121000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

120212121000 is an abundant number, since it is smaller than the sum of its proper divisors (254849705880).

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

120212121000 is a wasteful number, since it uses less digits than its factorization.

120212121000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40070731 (or 40070717 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 120212121000 its reverse (121212021), we get a palindrome (120333333021).

The spelling of 120212121000 in words is "one hundred twenty billion, two hundred twelve million, one hundred twenty-one thousand".