20011100012131 has 16 divisors (see below), whose sum is σ = 20465362990080. Its totient is φ = 19560925314720.

The previous prime is 20011100012117. The next prime is 20011100012177. The reversal of 20011100012131 is 13121000111002.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 20011100012131 - 2⁷ = 20011100012003 is a prime.

It is a super-2 number, since 2×20011100012131² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20011100012731) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 160407726 + ... + 160532428.

It is an arithmetic number, because the mean of its divisors is an integer number (1279085186880).

Almost surely, 2^{20011100012131} is an apocalyptic number.

20011100012131 is a deficient number, since it is larger than the sum of its proper divisors (454262977949).

20011100012131 is a wasteful number, since it uses less digits than its factorization.

20011100012131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 141066.

The product of its (nonzero) digits is 12, while the sum is 13.

Adding to 20011100012131 its reverse (13121000111002), we get a palindrome (33132100123133).

The spelling of 20011100012131 in words is "twenty trillion, eleven billion, one hundred million, twelve thousand, one hundred thirty-one".