212120210222051 has 2 divisors, whose sum is σ = 212120210222052. Its totient is φ = 212120210222050.

The previous prime is 212120210222047. The next prime is 212120210222113. The reversal of 212120210222051 is 150222012021212.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 212120210222051 - 2² = 212120210222047 is a prime.

It is not a weakly prime, because it can be changed into another prime (212120210222551) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106060105111025 + 106060105111026.

It is an arithmetic number, because the mean of its divisors is an integer number (106060105111026).

Almost surely, 2^{212120210222051} is an apocalyptic number.

212120210222051 is a deficient number, since it is larger than the sum of its proper divisors (1).

212120210222051 is an equidigital number, since it uses as much as digits as its factorization.

212120210222051 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 640, while the sum is 23.

Adding to 212120210222051 its reverse (150222012021212), we get a palindrome (362342222243263).

The spelling of 212120210222051 in words is "two hundred twelve trillion, one hundred twenty billion, two hundred ten million, two hundred twenty-two thousand, fifty-one".