20011102131 has 8 divisors (see below), whose sum is σ = 26819716240. Its totient is φ = 13271611392.

The previous prime is 20011102129. The next prime is 20011102159. The reversal of 20011102131 is 13120111002.

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

It is not a de Polignac number, because 20011102131 - 2¹ = 20011102129 is a prime.

It is a super-2 number, since 2×20011102131² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20011102171) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17280166 + ... + 17281323.

It is an arithmetic number, because the mean of its divisors is an integer number (3352464530).

Almost surely, 2^20011102131 is an apocalyptic number.

20011102131 is a deficient number, since it is larger than the sum of its proper divisors (6808614109).

20011102131 is a wasteful number, since it uses less digits than its factorization.

20011102131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34561685.

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

Adding to 20011102131 its reverse (13120111002), we get a palindrome (33131213133).

The spelling of 20011102131 in words is "twenty billion, eleven million, one hundred two thousand, one hundred thirty-one".