121399532 has 12 divisors (see below), whose sum is σ = 213081960. Its totient is φ = 60518976.

The previous prime is 121399519. The next prime is 121399547. The reversal of 121399532 is 235993121.

It is a junction number, because it is equal to n+sod(n) for n = 121399492 and 121399501.

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, 43682 + ... + 46377.

It is an arithmetic number, because the mean of its divisors is an integer number (17756830).

Almost surely, 2^121399532 is an apocalyptic number.

It is an amenable number.

121399532 is a deficient number, since it is larger than the sum of its proper divisors (91682428).

121399532 is a wasteful number, since it uses less digits than its factorization.

121399532 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 90400 (or 90398 counting only the distinct ones).

The product of its digits is 14580, while the sum is 35.

The square root of 121399532 is about 11018.1455789983. The cubic root of 121399532 is about 495.1525319817.

The spelling of 121399532 in words is "one hundred twenty-one million, three hundred ninety-nine thousand, five hundred thirty-two".