20024072101231 has 32 divisors (see below), whose sum is σ = 22142707679232. Its totient is φ = 17956727093760.

The previous prime is 20024072101139. The next prime is 20024072101249. The reversal of 20024072101231 is 13210127042002.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20024072101231 is a prime.

It is a super-2 number, since 2×20024072101231² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20024072101196 and 20024072101205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20024072101261) 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, 1311927906 + ... + 1311943168.

It is an arithmetic number, because the mean of its divisors is an integer number (691959614976).

Almost surely, 2^{20024072101231} is an apocalyptic number.

20024072101231 is a deficient number, since it is larger than the sum of its proper divisors (2118635578001).

20024072101231 is a wasteful number, since it uses less digits than its factorization.

20024072101231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20343.

The product of its (nonzero) digits is 1344, while the sum is 25.

Adding to 20024072101231 its reverse (13210127042002), we get a palindrome (33234199143233).

The spelling of 20024072101231 in words is "twenty trillion, twenty-four billion, seventy-two million, one hundred one thousand, two hundred thirty-one".