20012212099 has 32 divisors (see below), whose sum is σ = 25117378560. Its totient is φ = 15698188800.

The previous prime is 20012212069. The next prime is 20012212123. The reversal of 20012212099 is 99021221002.

It is a cyclic number.

It is not a de Polignac number, because 20012212099 - 2⁵ = 20012212067 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20012212009) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 19297 + ... + 200989.

It is an arithmetic number, because the mean of its divisors is an integer number (784918080).

Almost surely, 2^20012212099 is an apocalyptic number.

20012212099 is a deficient number, since it is larger than the sum of its proper divisors (5105166461).

20012212099 is a wasteful number, since it uses less digits than its factorization.

20012212099 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 181771.

The product of its (nonzero) digits is 1296, while the sum is 28.

The spelling of 20012212099 in words is "twenty billion, twelve million, two hundred twelve thousand, ninety-nine".