20121200121010 has 32 divisors (see below), whose sum is σ = 38310573317760. Its totient is φ = 7593086590848.

The previous prime is 20121200120951. The next prime is 20121200121041. The reversal of 20121200121010 is 1012100212102.

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, 599185120 + ... + 599218699.

It is an arithmetic number, because the mean of its divisors is an integer number (1197205416180).

Almost surely, 2^{20121200121010} is an apocalyptic number.

20121200121010 is a deficient number, since it is larger than the sum of its proper divisors (18189373196750).

20121200121010 is a wasteful number, since it uses less digits than its factorization.

20121200121010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1198403922.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 20121200121010 its reverse (1012100212102), we get a palindrome (21133300333112).

The spelling of 20121200121010 in words is "twenty trillion, one hundred twenty-one billion, two hundred million, one hundred twenty-one thousand, ten".