210121012037 has 2 divisors, whose sum is σ = 210121012038. Its totient is φ = 210121012036.

The previous prime is 210121012007. The next prime is 210121012039. The reversal of 210121012037 is 730210121012.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 169613009281 + 40508002756 = 411841^2 + 201266^2 .

It is a cyclic number.

It is not a de Polignac number, because 210121012037 - 2²² = 210116817733 is a prime.

Together with 210121012039, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (210121012039) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105060506018 + 105060506019.

It is an arithmetic number, because the mean of its divisors is an integer number (105060506019).

Almost surely, 2^210121012037 is an apocalyptic number.

It is an amenable number.

210121012037 is a deficient number, since it is larger than the sum of its proper divisors (1).

210121012037 is an equidigital number, since it uses as much as digits as its factorization.

210121012037 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 168, while the sum is 20.

Adding to 210121012037 its reverse (730210121012), we get a palindrome (940331133049).

The spelling of 210121012037 in words is "two hundred ten billion, one hundred twenty-one million, twelve thousand, thirty-seven".