121533334544 has 20 divisors (see below), whose sum is σ = 235485957696. Its totient is φ = 60762764832.

The previous prime is 121533334513. The next prime is 121533334579. The reversal of 121533334544 is 445433335121.

It is a junction number, because it is equal to n+sod(n) for n = 121533334498 and 121533334507.

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, 21797 + ... + 493499.

Almost surely, 2^121533334544 is an apocalyptic number.

It is an amenable number.

121533334544 is a deficient number, since it is larger than the sum of its proper divisors (113952623152).

121533334544 is a wasteful number, since it uses less digits than its factorization.

121533334544 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 487814 (or 487808 counting only the distinct ones).

The product of its digits is 259200, while the sum is 38.

Adding to 121533334544 its reverse (445433335121), we get a palindrome (566966669665).

The spelling of 121533334544 in words is "one hundred twenty-one billion, five hundred thirty-three million, three hundred thirty-four thousand, five hundred forty-four".