20011202212131 has 24 divisors (see below), whose sum is σ = 31139021833920. Its totient is φ = 12310438041216.

The previous prime is 20011202212117. The next prime is 20011202212187. The reversal of 20011202212131 is 13121220211002.

20011202212131 is a `hidden beast` number, since 200 + 1 + 120 + 2 + 212 + 131 = 666.

It is not a de Polignac number, because 20011202212131 - 2²⁵ = 20011168657699 is a prime.

It is a super-2 number, since 2×20011202212131² (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (20011202212531) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 28456251 + ... + 29150996.

It is an arithmetic number, because the mean of its divisors is an integer number (1297459243080).

Almost surely, 2^{20011202212131} is an apocalyptic number.

20011202212131 is a deficient number, since it is larger than the sum of its proper divisors (11127819621789).

20011202212131 is a wasteful number, since it uses less digits than its factorization.

20011202212131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57610235 (or 57610232 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 18.

Adding to 20011202212131 its reverse (13121220211002), we get a palindrome (33132422423133).

The spelling of 20011202212131 in words is "twenty trillion, eleven billion, two hundred two million, two hundred twelve thousand, one hundred thirty-one".