212122121051 has 2 divisors, whose sum is σ = 212122121052. Its totient is φ = 212122121050.

The previous prime is 212122121027. The next prime is 212122121143. The reversal of 212122121051 is 150121221212.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 212122121051 - 2²² = 212117926747 is a prime.

It is not a weakly prime, because it can be changed into another prime (212122121251) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106061060525 + 106061060526.

It is an arithmetic number, because the mean of its divisors is an integer number (106061060526).

Almost surely, 2^212122121051 is an apocalyptic number.

212122121051 is a deficient number, since it is larger than the sum of its proper divisors (1).

212122121051 is an equidigital number, since it uses as much as digits as its factorization.

212122121051 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 160, while the sum is 20.

Adding to 212122121051 its reverse (150121221212), we get a palindrome (362243342263).

The spelling of 212122121051 in words is "two hundred twelve billion, one hundred twenty-two million, one hundred twenty-one thousand, fifty-one".