201212122220969 has 2 divisors, whose sum is σ = 201212122220970. Its totient is φ = 201212122220968.

The previous prime is 201212122220927. The next prime is 201212122221107. The reversal of 201212122220969 is 969022221212102.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 174066146588569 + 27145975632400 = 13193413^2 + 5210180^2 .

It is a cyclic number.

It is not a de Polignac number, because 201212122220969 - 2²⁰ = 201212121172393 is a prime.

It is a super-2 number, since 2×201212122220969² (a number of 29 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (201212122220869) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100606061110484 + 100606061110485.

It is an arithmetic number, because the mean of its divisors is an integer number (100606061110485).

Almost surely, 2^{201212122220969} is an apocalyptic number.

It is an amenable number.

201212122220969 is a deficient number, since it is larger than the sum of its proper divisors (1).

201212122220969 is an equidigital number, since it uses as much as digits as its factorization.

201212122220969 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 62208, while the sum is 41.

The spelling of 201212122220969 in words is "two hundred one trillion, two hundred twelve billion, one hundred twenty-two million, two hundred twenty thousand, nine hundred sixty-nine".