121963022553969 has 27 divisors (see below), whose sum is σ = 177350492306169. Its totient is φ = 80766900505800.

The previous prime is 121963022553907. The next prime is 121963022554033. The reversal of 121963022553969 is 969355220369121.

It is a happy number.

The square root of 121963022553969 is 11043687.

It is a perfect power (a square), and thus also a powerful number.

121963022553969 is a `hidden beast` number, since 1 + 2 + 1 + 9 + 6 + 30 + 2 + 2 + 5 + 539 + 69 = 666.

It is not a de Polignac number, because 121963022553969 - 2²⁷ = 121962888336241 is a prime.

It is a super-2 number, since 2×121963022553969² (a number of 29 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (121963022551969) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 5002778022 + ... + 5002802400.

Almost surely, 2^{121963022553969} is an apocalyptic number.

121963022553969 is the 11043687-th square number.

121963022553969 is the 5521844-th centered octagonal number.

It is an amenable number.

121963022553969 is a deficient number, since it is larger than the sum of its proper divisors (55387469752200).

121963022553969 is an frugal number, since it uses more digits than its factorization.

121963022553969 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49066 (or 24533 counting only the distinct ones).

The product of its (nonzero) digits is 47239200, while the sum is 63.

The spelling of 121963022553969 in words is "one hundred twenty-one trillion, nine hundred sixty-three billion, twenty-two million, five hundred fifty-three thousand, nine hundred sixty-nine".