13212077 has 4 divisors (see below), whose sum is σ = 13989276. Its totient is φ = 12434880.

The previous prime is 13212061. The next prime is 13212103. The reversal of 13212077 is 77021231.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 10883401 + 2328676 = 3299^2 + 1526^2 .

It is a cyclic number.

It is not a de Polignac number, because 13212077 - 2⁴ = 13212061 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13212007) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 388574 + ... + 388607.

It is an arithmetic number, because the mean of its divisors is an integer number (3497319).

Almost surely, 2^13212077 is an apocalyptic number.

13212077 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

It is an amenable number.

13212077 is a deficient number, since it is larger than the sum of its proper divisors (777199).

13212077 is an equidigital number, since it uses as much as digits as its factorization.

13212077 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 777198.

The product of its (nonzero) digits is 588, while the sum is 23.

The square root of 13212077 is about 3634.8420873540. The cubic root of 13212077 is about 236.4052037662.

The spelling of 13212077 in words is "thirteen million, two hundred twelve thousand, seventy-seven".