99201321 has 16 divisors (see below), whose sum is σ = 147134400. Its totient is φ = 66057984.

The previous prime is 99201317. The next prime is 99201343. The reversal of 99201321 is 12310299.

It is not a de Polignac number, because 99201321 - 2² = 99201317 is a prime.

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (99201391) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 31350 + ... + 34368.

It is an arithmetic number, because the mean of its divisors is an integer number (9195900).

Almost surely, 2^99201321 is an apocalyptic number.

It is an amenable number.

99201321 is a deficient number, since it is larger than the sum of its proper divisors (47933079).

99201321 is a wasteful number, since it uses less digits than its factorization.

99201321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4245 (or 4239 counting only the distinct ones).

The product of its (nonzero) digits is 972, while the sum is 27.

The square root of 99201321 is about 9959.9859939661. The cubic root of 99201321 is about 462.9198657160.

The spelling of 99201321 in words is "ninety-nine million, two hundred one thousand, three hundred twenty-one".