121321132 has 18 divisors (see below), whose sum is σ = 217628684. Its totient is φ = 59177760.

The previous prime is 121321127. The next prime is 121321133. The reversal of 121321132 is 231123121.

It is a super-2 number, since 2×121321132² = 29437634139522848, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (121321133) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2298 + ... + 15745.

Almost surely, 2^121321132 is an apocalyptic number.

It is an amenable number.

121321132 is a deficient number, since it is larger than the sum of its proper divisors (96307552).

121321132 is a wasteful number, since it uses less digits than its factorization.

121321132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18129 (or 18086 counting only the distinct ones).

The product of its digits is 72, while the sum is 16.

The square root of 121321132 is about 11014.5872369327. The cubic root of 121321132 is about 495.0459189453.

Adding to 121321132 its reverse (231123121), we get a palindrome (352444253).

The spelling of 121321132 in words is "one hundred twenty-one million, three hundred twenty-one thousand, one hundred thirty-two".