13222743385 has 8 divisors (see below), whose sum is σ = 16127411976. Its totient is φ = 10404781440.

The previous prime is 13222743371. The next prime is 13222743403. The reversal of 13222743385 is 58334722231.

It can be written as a sum of positive squares in 4 ways, for example, as 129891609 + 13092851776 = 11397^2 + 114424^2 .

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

It is not a de Polignac number, because 13222743385 - 2⁷ = 13222743257 is a prime.

It is a super-2 number, since 2×13222743385² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21676324 + ... + 21676933.

It is an arithmetic number, because the mean of its divisors is an integer number (2015926497).

Almost surely, 2^13222743385 is an apocalyptic number.

It is an amenable number.

13222743385 is a deficient number, since it is larger than the sum of its proper divisors (2904668591).

13222743385 is an equidigital number, since it uses as much as digits as its factorization.

13222743385 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43353323.

The product of its digits is 241920, while the sum is 40.

The spelling of 13222743385 in words is "thirteen billion, two hundred twenty-two million, seven hundred forty-three thousand, three hundred eighty-five".