13505212222 has 4 divisors (see below), whose sum is σ = 20257818336. Its totient is φ = 6752606110.

The previous prime is 13505212163. The next prime is 13505212297. The reversal of 13505212222 is 22221250531.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 22221250531 = 1447 ⋅15356773.

It is a super-2 number, since 2×13505212222² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3376303054 + ... + 3376303057.

It is an arithmetic number, because the mean of its divisors is an integer number (5064454584).

Almost surely, 2^13505212222 is an apocalyptic number.

13505212222 is a deficient number, since it is larger than the sum of its proper divisors (6752606114).

13505212222 is an equidigital number, since it uses as much as digits as its factorization.

13505212222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6752606113.

The product of its (nonzero) digits is 2400, while the sum is 25.

Adding to 13505212222 its reverse (22221250531), we get a palindrome (35726462753).

The spelling of 13505212222 in words is "thirteen billion, five hundred five million, two hundred twelve thousand, two hundred twenty-two".