99121068 has 18 divisors (see below), whose sum is σ = 250556124. Its totient is φ = 33040344.

The previous prime is 99121027. The next prime is 99121069. The reversal of 99121068 is 86012199.

It is a tau number, because it is divible by the number of its divisors (18).

It is a super-3 number, since 3×99121068³ (a number of 25 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Harshad number since it is a multiple of its sum of digits (36), and also a Moran number because the ratio is a prime number: 2753363 = 99121068 / (9 + 9 + 1 + 2 + 1 + 0 + 6 + 8).

It is not an unprimeable number, because it can be changed into a prime (99121069) 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, 1376646 + ... + 1376717.

Almost surely, 2^99121068 is an apocalyptic number.

It is an amenable number.

99121068 is an abundant number, since it is smaller than the sum of its proper divisors (151435056).

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

99121068 is a wasteful number, since it uses less digits than its factorization.

99121068 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2753373 (or 2753368 counting only the distinct ones).

The product of its (nonzero) digits is 7776, while the sum is 36.

The square root of 99121068 is about 9955.9564081006. The cubic root of 99121068 is about 462.7949993322.

The spelling of 99121068 in words is "ninety-nine million, one hundred twenty-one thousand, sixty-eight".