102102020131 has 2 divisors, whose sum is σ = 102102020132. Its totient is φ = 102102020130.

The previous prime is 102102020117. The next prime is 102102020159. The reversal of 102102020131 is 131020201201.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 102102020131 - 2¹⁵ = 102101987363 is a prime.

It is a super-2 number, since 2×102102020131² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (102102020171) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51051010065 + 51051010066.

It is an arithmetic number, because the mean of its divisors is an integer number (51051010066).

Almost surely, 2^102102020131 is an apocalyptic number.

102102020131 is a deficient number, since it is larger than the sum of its proper divisors (1).

102102020131 is an equidigital number, since it uses as much as digits as its factorization.

102102020131 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 24, while the sum is 13.

Adding to 102102020131 its reverse (131020201201), we get a palindrome (233122221332).

The spelling of 102102020131 in words is "one hundred two billion, one hundred two million, twenty thousand, one hundred thirty-one".