13751222 has 8 divisors (see below), whose sum is σ = 20816400. Its totient is φ = 6812424.

The previous prime is 13751207. The next prime is 13751233. The reversal of 13751222 is 22215731.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×13751222² = 378192212986568, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 31322 + ... + 31757.

It is an arithmetic number, because the mean of its divisors is an integer number (2602050).

Almost surely, 2^13751222 is an apocalyptic number.

13751222 is a deficient number, since it is larger than the sum of its proper divisors (7065178).

13751222 is a wasteful number, since it uses less digits than its factorization.

13751222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63190.

The product of its digits is 840, while the sum is 23.

The square root of 13751222 is about 3708.2640143334. The cubic root of 13751222 is about 239.5780897521.

Adding to 13751222 its reverse (22215731), we get a palindrome (35966953).

The spelling of 13751222 in words is "thirteen million, seven hundred fifty-one thousand, two hundred twenty-two".