2121201210000 has 100 divisors (see below), whose sum is σ = 6847520429552. Its totient is φ = 565653648000.

The previous prime is 2121201209999. The next prime is 2121201210013. The reversal of 2121201210000 is 121021212.

It is a tau number, because it is divible by the number of its divisors (100).

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 19 ways as a sum of consecutive naturals, for example, 35323354 + ... + 35383353.

Almost surely, 2^{2121201210000} is an apocalyptic number.

2121201210000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2121201210000 is an abundant number, since it is smaller than the sum of its proper divisors (4726319219552).

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

2121201210000 is an equidigital number, since it uses as much as digits as its factorization.

2121201210000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70706738 (or 70706717 counting only the distinct ones).

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

Adding to 2121201210000 its reverse (121021212), we get a palindrome (2121322231212).

The spelling of 2121201210000 in words is "two trillion, one hundred twenty-one billion, two hundred one million, two hundred ten thousand".