13021212 has 12 divisors (see below), whose sum is σ = 30382856. Its totient is φ = 4340400.

The previous prime is 13021207. The next prime is 13021219. The reversal of 13021212 is 21212031.

It is a tau number, because it is divible by the number of its divisors (12).

It is a Harshad number since it is a multiple of its sum of digits (12), and also a Moran number because the ratio is a prime number: 1085101 = 13021212 / (1 + 3 + 0 + 2 + 1 + 2 + 1 + 2).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13021219) 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, 542539 + ... + 542562.

Almost surely, 2^13021212 is an apocalyptic number.

13021212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

13021212 is an abundant number, since it is smaller than the sum of its proper divisors (17361644).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

13021212 is a wasteful number, since it uses less digits than its factorization.

13021212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1085108 (or 1085106 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 12.

The square root of 13021212 is about 3608.4916516462. The cubic root of 13021212 is about 235.2612877676.

Adding to 13021212 its reverse (21212031), we get a palindrome (34233243).

The spelling of 13021212 in words is "thirteen million, twenty-one thousand, two hundred twelve".