13211402 has 4 divisors (see below), whose sum is σ = 19817106. Its totient is φ = 6605700.

The previous prime is 13211399. The next prime is 13211423. The reversal of 13211402 is 20411231.

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

It can be written as a sum of positive squares in only one way, i.e., 11621281 + 1590121 = 3409^2 + 1261^2 .

It is a super-2 number, since 2×13211402² = 349082285611208, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3302849 + ... + 3302852.

Almost surely, 2^13211402 is an apocalyptic number.

13211402 is a deficient number, since it is larger than the sum of its proper divisors (6605704).

13211402 is an equidigital number, since it uses as much as digits as its factorization.

13211402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6605703.

The product of its (nonzero) digits is 48, while the sum is 14.

The square root of 13211402 is about 3634.7492348166. The cubic root of 13211402 is about 236.4011777469.

Adding to 13211402 its reverse (20411231), we get a palindrome (33622633).

The spelling of 13211402 in words is "thirteen million, two hundred eleven thousand, four hundred two".