210202120231 has 2 divisors, whose sum is σ = 210202120232. Its totient is φ = 210202120230.

The previous prime is 210202120229. The next prime is 210202120241. The reversal of 210202120231 is 132021202012.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 210202120231 - 2¹ = 210202120229 is a prime.

It is a super-2 number, since 2×210202120231² (a number of 23 digits) contains 22 as substring.

Together with 210202120229, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (210202120241) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105101060115 + 105101060116.

It is an arithmetic number, because the mean of its divisors is an integer number (105101060116).

Almost surely, 2^210202120231 is an apocalyptic number.

210202120231 is a deficient number, since it is larger than the sum of its proper divisors (1).

210202120231 is an equidigital number, since it uses as much as digits as its factorization.

210202120231 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 96, while the sum is 16.

Adding to 210202120231 its reverse (132021202012), we get a palindrome (342223322243).

The spelling of 210202120231 in words is "two hundred ten billion, two hundred two million, one hundred twenty thousand, two hundred thirty-one".