20012100192 has 144 divisors (see below), whose sum is σ = 67898340720. Its totient is φ = 5717730816.

The previous prime is 20012100149. The next prime is 20012100211. The reversal of 20012100192 is 29100121002.

It is a tau number, because it is divible by the number of its divisors (144).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 194013 + ... + 278684.

It is an arithmetic number, because the mean of its divisors is an integer number (471516255).

Almost surely, 2^20012100192 is an apocalyptic number.

It is an amenable number.

20012100192 is an abundant number, since it is smaller than the sum of its proper divisors (47886240528).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20012100192 is a wasteful number, since it uses less digits than its factorization.

20012100192 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 472730 (or 472709 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 18.

Adding to 20012100192 its reverse (29100121002), we get a palindrome (49112221194).

The spelling of 20012100192 in words is "twenty billion, twelve million, one hundred thousand, one hundred ninety-two".