121123661406354 has 48 divisors (see below), whose sum is σ = 269529497571672. Its totient is φ = 39283047823104.

The previous prime is 121123661406299. The next prime is 121123661406361. The reversal of 121123661406354 is 453604166321121.

121123661406354 is a `hidden beast` number, since 1 + 2 + 1 + 1 + 2 + 3 + 6 + 6 + 1 + 4 + 0 + 635 + 4 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 107885510372025 + 13238151034329 = 10386795^2 + 3638427^2 .

It is a super-2 number, since 2×121123661406354² (a number of 29 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 96112462 + ... + 97364534.

Almost surely, 2^{121123661406354} is an apocalyptic number.

121123661406354 is an abundant number, since it is smaller than the sum of its proper divisors (148405836165318).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

121123661406354 is a wasteful number, since it uses less digits than its factorization.

121123661406354 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1397371 (or 1397368 counting only the distinct ones).

The product of its (nonzero) digits is 622080, while the sum is 45.

The spelling of 121123661406354 in words is "one hundred twenty-one trillion, one hundred twenty-three billion, six hundred sixty-one million, four hundred six thousand, three hundred fifty-four".