2012102121009 has 16 divisors (see below), whose sum is σ = 2687745817152. Its totient is φ = 1338930236928.

The previous prime is 2012102120971. The next prime is 2012102121017. The reversal of 2012102121009 is 9001212012102.

It is not a de Polignac number, because 2012102121009 - 2¹⁶ = 2012102055473 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2012102121019) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 34414569 + ... + 34472985.

It is an arithmetic number, because the mean of its divisors is an integer number (167984113572).

Almost surely, 2^{2012102121009} is an apocalyptic number.

It is an amenable number.

2012102121009 is a deficient number, since it is larger than the sum of its proper divisors (675643696143).

2012102121009 is a wasteful number, since it uses less digits than its factorization.

2012102121009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79376.

The product of its (nonzero) digits is 144, while the sum is 21.

The spelling of 2012102121009 in words is "two trillion, twelve billion, one hundred two million, one hundred twenty-one thousand, nine".