20012200138 has 16 divisors (see below), whose sum is σ = 35233835904. Its totient is φ = 8344855440.

The previous prime is 20012200099. The next prime is 20012200139. The reversal of 20012200138 is 83100221002.

It is not an unprimeable number, because it can be changed into a prime (20012200139) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19316278 + ... + 19317313.

It is an arithmetic number, because the mean of its divisors is an integer number (2202114744).

Almost surely, 2^20012200138 is an apocalyptic number.

20012200138 is a deficient number, since it is larger than the sum of its proper divisors (15221635766).

20012200138 is a wasteful number, since it uses less digits than its factorization.

20012200138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38633637.

The product of its (nonzero) digits is 192, while the sum is 19.

The spelling of 20012200138 in words is "twenty billion, twelve million, two hundred thousand, one hundred thirty-eight".