210012212112137 has 2 divisors, whose sum is σ = 210012212112138. Its totient is φ = 210012212112136.

The previous prime is 210012212112103. The next prime is 210012212112217. The reversal of 210012212112137 is 731211212210012.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 206409424705936 + 3602787406201 = 14366956^2 + 1898101^2 .

It is a cyclic number.

It is not a de Polignac number, because 210012212112137 - 2⁴⁴ = 192420026067721 is a prime.

It is not a weakly prime, because it can be changed into another prime (210012212112337) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105006106056068 + 105006106056069.

It is an arithmetic number, because the mean of its divisors is an integer number (105006106056069).

Almost surely, 2^{210012212112137} is an apocalyptic number.

It is an amenable number.

210012212112137 is a deficient number, since it is larger than the sum of its proper divisors (1).

210012212112137 is an equidigital number, since it uses as much as digits as its factorization.

210012212112137 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 672, while the sum is 26.

Adding to 210012212112137 its reverse (731211212210012), we get a palindrome (941223424322149).

The spelling of 210012212112137 in words is "two hundred ten trillion, twelve billion, two hundred twelve million, one hundred twelve thousand, one hundred thirty-seven".