121421132 has 24 divisors (see below), whose sum is σ = 243102720. Its totient is φ = 51981840.

The previous prime is 121421129. The next prime is 121421137. The reversal of 121421132 is 231124121.

It is a super-2 number, since 2×121421132² = 29486182592322848, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 121421132.

It is not an unprimeable number, because it can be changed into a prime (121421137) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 34469 + ... + 37827.

It is an arithmetic number, because the mean of its divisors is an integer number (10129280).

Almost surely, 2^121421132 is an apocalyptic number.

It is an amenable number.

121421132 is an abundant number, since it is smaller than the sum of its proper divisors (121681588).

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

121421132 is a wasteful number, since it uses less digits than its factorization.

121421132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4661 (or 4659 counting only the distinct ones).

The product of its digits is 96, while the sum is 17.

The square root of 121421132 is about 11019.1257366454. The cubic root of 121421132 is about 495.1818968956.

Adding to 121421132 its reverse (231124121), we get a palindrome (352545253).

The spelling of 121421132 in words is "one hundred twenty-one million, four hundred twenty-one thousand, one hundred thirty-two".