20012132131 has 8 divisors (see below), whose sum is σ = 21192000624. Its totient is φ = 18832561920.

The previous prime is 20012132117. The next prime is 20012132137. The reversal of 20012132131 is 13123121002.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 20012132131 - 2⁵ = 20012132099 is a prime.

It is a super-2 number, since 2×20012132131² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (20012132137) 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, 71791 + ... + 212551.

It is an arithmetic number, because the mean of its divisors is an integer number (2649000078).

Almost surely, 2^20012132131 is an apocalyptic number.

20012132131 is a deficient number, since it is larger than the sum of its proper divisors (1179868493).

20012132131 is a wasteful number, since it uses less digits than its factorization.

20012132131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 149141.

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 20012132131 its reverse (13123121002), we get a palindrome (33135253133).

The spelling of 20012132131 in words is "twenty billion, twelve million, one hundred thirty-two thousand, one hundred thirty-one".