99121332 has 12 divisors (see below), whose sum is σ = 231283136. Its totient is φ = 33040440.

The previous prime is 99121307. The next prime is 99121343. The reversal of 99121332 is 23312199.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (12).

It is a self number, because there is not a number n which added to its sum of digits gives 99121332.

It is a congruent number.

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, 4130044 + ... + 4130067.

Almost surely, 2^99121332 is an apocalyptic number.

It is an amenable number.

99121332 is an abundant number, since it is smaller than the sum of its proper divisors (132161804).

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

99121332 is a wasteful number, since it uses less digits than its factorization.

99121332 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8260118 (or 8260116 counting only the distinct ones).

The product of its digits is 2916, while the sum is 30.

The square root of 99121332 is about 9955.9696664865. The cubic root of 99121332 is about 462.7954102027.

The spelling of 99121332 in words is "ninety-nine million, one hundred twenty-one thousand, three hundred thirty-two".