20110211023231 has 32 divisors (see below), whose sum is σ = 23074241404928. Its totient is φ = 17169141749760.

The previous prime is 20110211023093. The next prime is 20110211023247. The reversal of 20110211023231 is 13232011201102.

It is not a de Polignac number, because 20110211023231 - 2⁹ = 20110211022719 is a prime.

It is a super-2 number, since 2×20110211023231² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 20110211023199 and 20110211023208.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20110211023531) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5930464546 + ... + 5930467936.

It is an arithmetic number, because the mean of its divisors is an integer number (721070043904).

Almost surely, 2^{20110211023231} is an apocalyptic number.

20110211023231 is a deficient number, since it is larger than the sum of its proper divisors (2964030381697).

20110211023231 is a wasteful number, since it uses less digits than its factorization.

20110211023231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6791.

The product of its (nonzero) digits is 144, while the sum is 19.

Adding to 20110211023231 its reverse (13232011201102), we get a palindrome (33342222224333).

The spelling of 20110211023231 in words is "twenty trillion, one hundred ten billion, two hundred eleven million, twenty-three thousand, two hundred thirty-one".