212211002137 has 2 divisors, whose sum is σ = 212211002138. Its totient is φ = 212211002136.

The previous prime is 212211002099. The next prime is 212211002149. The reversal of 212211002137 is 731200112212.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 190714750681 + 21496251456 = 436709^2 + 146616^2 .

It is a cyclic number.

It is not a de Polignac number, because 212211002137 - 2³⁵ = 177851263769 is a prime.

It is not a weakly prime, because it can be changed into another prime (212211000137) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106105501068 + 106105501069.

It is an arithmetic number, because the mean of its divisors is an integer number (106105501069).

Almost surely, 2^212211002137 is an apocalyptic number.

It is an amenable number.

212211002137 is a deficient number, since it is larger than the sum of its proper divisors (1).

212211002137 is an equidigital number, since it uses as much as digits as its factorization.

212211002137 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 336, while the sum is 22.

Adding to 212211002137 its reverse (731200112212), we get a palindrome (943411114349).

The spelling of 212211002137 in words is "two hundred twelve billion, two hundred eleven million, two thousand, one hundred thirty-seven".