13451220022 has 4 divisors (see below), whose sum is σ = 20176830036. Its totient is φ = 6725610010.

The previous prime is 13451220011. The next prime is 13451220047. The reversal of 13451220022 is 22002215431.

It is a happy number.

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

It is a junction number, because it is equal to n+sod(n) for n = 13451219975 and 13451220002.

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, 3362805004 + ... + 3362805007.

It is an arithmetic number, because the mean of its divisors is an integer number (5044207509).

Almost surely, 2^13451220022 is an apocalyptic number.

13451220022 is a deficient number, since it is larger than the sum of its proper divisors (6725610014).

13451220022 is an equidigital number, since it uses as much as digits as its factorization.

13451220022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6725610013.

The product of its (nonzero) digits is 960, while the sum is 22.

Adding to 13451220022 its reverse (22002215431), we get a palindrome (35453435453).

The spelling of 13451220022 in words is "thirteen billion, four hundred fifty-one million, two hundred twenty thousand, twenty-two".