20020102231 has 2 divisors, whose sum is σ = 20020102232. Its totient is φ = 20020102230.

The previous prime is 20020102177. The next prime is 20020102243. The reversal of 20020102231 is 13220102002.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20020102231 - 2²¹ = 20018005079 is a prime.

It is a super-2 number, since 2×20020102231² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20020102631) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10010051115 + 10010051116.

It is an arithmetic number, because the mean of its divisors is an integer number (10010051116).

Almost surely, 2^20020102231 is an apocalyptic number.

20020102231 is a deficient number, since it is larger than the sum of its proper divisors (1).

20020102231 is an equidigital number, since it uses as much as digits as its factorization.

20020102231 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 48, while the sum is 13.

Adding to 20020102231 its reverse (13220102002), we get a palindrome (33240204233).

The spelling of 20020102231 in words is "twenty billion, twenty million, one hundred two thousand, two hundred thirty-one".