20031012099 has 16 divisors (see below), whose sum is σ = 33914941440. Its totient is φ = 11446292520.

The previous prime is 20031012073. The next prime is 20031012103. The reversal of 20031012099 is 99021013002.

It is not a de Polignac number, because 20031012099 - 2⁸ = 20031011843 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (20031012299) 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, 52991907 + ... + 52992284.

It is an arithmetic number, because the mean of its divisors is an integer number (2119683840).

Almost surely, 2^20031012099 is an apocalyptic number.

20031012099 is a deficient number, since it is larger than the sum of its proper divisors (13883929341).

20031012099 is a wasteful number, since it uses less digits than its factorization.

20031012099 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 105984207 (or 105984201 counting only the distinct ones).

The product of its (nonzero) digits is 972, while the sum is 27.

The spelling of 20031012099 in words is "twenty billion, thirty-one million, twelve thousand, ninety-nine".