13212099 has 8 divisors (see below), whose sum is σ = 19573520. Its totient is φ = 8808048.

The previous prime is 13212061. The next prime is 13212103. The reversal of 13212099 is 99021231.

13212099 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 13212099 - 2⁸ = 13211843 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 489337 = 13212099 / (1 + 3 + 2 + 1 + 2 + 0 + 9 + 9).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13212599) 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, 244642 + ... + 244695.

It is an arithmetic number, because the mean of its divisors is an integer number (2446690).

Almost surely, 2^13212099 is an apocalyptic number.

13212099 is a deficient number, since it is larger than the sum of its proper divisors (6361421).

13212099 is an equidigital number, since it uses as much as digits as its factorization.

13212099 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 489346 (or 489340 counting only the distinct ones).

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

The square root of 13212099 is about 3634.8451136190. The cubic root of 13212099 is about 236.4053349823.

The spelling of 13212099 in words is "thirteen million, two hundred twelve thousand, ninety-nine".