121022209969 has 2 divisors, whose sum is σ = 121022209970. Its totient is φ = 121022209968.

The previous prime is 121022209963. The next prime is 121022210009. The reversal of 121022209969 is 969902220121.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 116899029025 + 4123180944 = 341905^2 + 64212^2 .

It is a cyclic number.

It is not a de Polignac number, because 121022209969 - 2²³ = 121013821361 is a prime.

It is a super-2 number, since 2×121022209969² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (121022209963) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60511104984 + 60511104985.

It is an arithmetic number, because the mean of its divisors is an integer number (60511104985).

Almost surely, 2^121022209969 is an apocalyptic number.

It is an amenable number.

121022209969 is a deficient number, since it is larger than the sum of its proper divisors (1).

121022209969 is an equidigital number, since it uses as much as digits as its factorization.

121022209969 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 69984, while the sum is 43.

The spelling of 121022209969 in words is "one hundred twenty-one billion, twenty-two million, two hundred nine thousand, nine hundred sixty-nine".