121222220969 has 2 divisors, whose sum is σ = 121222220970. Its totient is φ = 121222220968.

The previous prime is 121222220923. The next prime is 121222221041. The reversal of 121222220969 is 969022222121.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 121211904025 + 10316944 = 348155^2 + 3212^2 .

It is a cyclic number.

It is not a de Polignac number, because 121222220969 - 2³⁶ = 52502744233 is a prime.

It is a super-2 number, since 2×121222220969² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (121222220369) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60611110484 + 60611110485.

It is an arithmetic number, because the mean of its divisors is an integer number (60611110485).

Almost surely, 2^121222220969 is an apocalyptic number.

It is an amenable number.

121222220969 is a deficient number, since it is larger than the sum of its proper divisors (1).

121222220969 is an equidigital number, since it uses as much as digits as its factorization.

121222220969 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 31104, while the sum is 38.

The spelling of 121222220969 in words is "one hundred twenty-one billion, two hundred twenty-two million, two hundred twenty thousand, nine hundred sixty-nine".