2121200102012 has 24 divisors (see below), whose sum is σ = 3763040538432. Its totient is φ = 1046046355200.

The previous prime is 2121200101991. The next prime is 2121200102017. The reversal of 2121200102012 is 2102010021212.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2121200102017) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20818712 + ... + 20920352.

It is an arithmetic number, because the mean of its divisors is an integer number (156793355768).

Almost surely, 2^{2121200102012} is an apocalyptic number.

It is an amenable number.

2121200102012 is a deficient number, since it is larger than the sum of its proper divisors (1641840436420).

2121200102012 is a wasteful number, since it uses less digits than its factorization.

2121200102012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 173189 (or 173187 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 2121200102012 its reverse (2102010021212), we get a palindrome (4223210123224).

The spelling of 2121200102012 in words is "two trillion, one hundred twenty-one billion, two hundred million, one hundred two thousand, twelve".