13212977 has 4 divisors (see below), whose sum is σ = 13330020. Its totient is φ = 13095936.

The previous prime is 13212967. The next prime is 13213001. The reversal of 13212977 is 77921231.

13212977 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 3671056 + 9541921 = 1916^2 + 3089^2 .

It is a cyclic number.

It is not a de Polignac number, because 13212977 - 2¹⁰ = 13211953 is a prime.

It is a super-2 number, since 2×13212977² = 349165522405058, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13212907) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 58352 + ... + 58577.

It is an arithmetic number, because the mean of its divisors is an integer number (3332505).

Almost surely, 2^13212977 is an apocalyptic number.

It is an amenable number.

13212977 is a deficient number, since it is larger than the sum of its proper divisors (117043).

13212977 is a wasteful number, since it uses less digits than its factorization.

13212977 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 117042.

The product of its digits is 5292, while the sum is 32.

The square root of 13212977 is about 3634.9658870476. The cubic root of 13212977 is about 236.4105715786.

The spelling of 13212977 in words is "thirteen million, two hundred twelve thousand, nine hundred seventy-seven".