13212129 has 16 divisors (see below), whose sum is σ = 20193152. Its totient is φ = 7527168.

The previous prime is 13212109. The next prime is 13212131. The reversal of 13212129 is 92121231.

13212129 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 13212129 - 2¹¹ = 13210081 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is not an unprimeable number, because it can be changed into a prime (13212109) 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, 8367 + ... + 9819.

It is an arithmetic number, because the mean of its divisors is an integer number (1262072).

Almost surely, 2^13212129 is an apocalyptic number.

It is an amenable number.

13212129 is a deficient number, since it is larger than the sum of its proper divisors (6981023).

13212129 is a wasteful number, since it uses less digits than its factorization.

13212129 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1896.

The product of its digits is 216, while the sum is 21.

The square root of 13212129 is about 3634.8492403400. The cubic root of 13212129 is about 236.4055139131.

The spelling of 13212129 in words is "thirteen million, two hundred twelve thousand, one hundred twenty-nine".