100220023531 has 2 divisors, whose sum is σ = 100220023532. Its totient is φ = 100220023530.

The previous prime is 100220023493. The next prime is 100220023559. The reversal of 100220023531 is 135320022001.

It is a strong prime.

It is an emirp because it is prime and its reverse (135320022001) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 100220023531 - 2⁷ = 100220023403 is a prime.

It is a super-2 number, since 2×100220023531² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 100220023499 and 100220023508.

It is not a weakly prime, because it can be changed into another prime (100220023571) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50110011765 + 50110011766.

It is an arithmetic number, because the mean of its divisors is an integer number (50110011766).

Almost surely, 2^100220023531 is an apocalyptic number.

100220023531 is a deficient number, since it is larger than the sum of its proper divisors (1).

100220023531 is an equidigital number, since it uses as much as digits as its factorization.

100220023531 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 360, while the sum is 19.

Adding to 100220023531 its reverse (135320022001), we get a palindrome (235540045532).

The spelling of 100220023531 in words is "one hundred billion, two hundred twenty million, twenty-three thousand, five hundred thirty-one".