1000012020999 has 16 divisors (see below), whose sum is σ = 1347186086400. Its totient is φ = 659770901856.

The previous prime is 1000012020991. The next prime is 1000012021067. The reversal of 1000012020999 is 9990202100001.

It is not a de Polignac number, because 1000012020999 - 2³ = 1000012020991 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1000012020991) 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, 1548139 + ... + 2096844.

It is an arithmetic number, because the mean of its divisors is an integer number (84199130400).

Almost surely, 2^{1000012020999} is an apocalyptic number.

1000012020999 is a deficient number, since it is larger than the sum of its proper divisors (347174065401).

1000012020999 is a wasteful number, since it uses less digits than its factorization.

1000012020999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3645934.

The product of its (nonzero) digits is 2916, while the sum is 33.

The spelling of 1000012020999 in words is "one trillion, twelve million, twenty thousand, nine hundred ninety-nine".