20210220131 has 2 divisors, whose sum is σ = 20210220132. Its totient is φ = 20210220130.

The previous prime is 20210220119. The next prime is 20210220137. The reversal of 20210220131 is 13102201202.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20210220131 - 2³⁰ = 19136478307 is a prime.

It is a super-2 number, since 2×20210220131² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (20210220137) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10105110065 + 10105110066.

It is an arithmetic number, because the mean of its divisors is an integer number (10105110066).

Almost surely, 2^20210220131 is an apocalyptic number.

20210220131 is a deficient number, since it is larger than the sum of its proper divisors (1).

20210220131 is an equidigital number, since it uses as much as digits as its factorization.

20210220131 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 48, while the sum is 14.

Adding to 20210220131 its reverse (13102201202), we get a palindrome (33312421333).

The spelling of 20210220131 in words is "twenty billion, two hundred ten million, two hundred twenty thousand, one hundred thirty-one".