121353155432 has 16 divisors (see below), whose sum is σ = 227540974500. Its totient is φ = 60675562240.

The previous prime is 121353155393. The next prime is 121353155459. The reversal of 121353155432 is 234551353121.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 115468117636 + 5885037796 = 339806^2 + 76714^2 .

It is a super-2 number, since 2×121353155432² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 121353155392 and 121353155401.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 690944 + ... + 848592.

Almost surely, 2^121353155432 is an apocalyptic number.

It is an amenable number.

121353155432 is a deficient number, since it is larger than the sum of its proper divisors (106187819068).

121353155432 is a wasteful number, since it uses less digits than its factorization.

121353155432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 253876 (or 253872 counting only the distinct ones).

The product of its digits is 54000, while the sum is 35.

The spelling of 121353155432 in words is "one hundred twenty-one billion, three hundred fifty-three million, one hundred fifty-five thousand, four hundred thirty-two".