13215221454044 has 36 divisors (see below), whose sum is σ = 24180998213736. Its totient is φ = 6318980324448.

The previous prime is 13215221454031. The next prime is 13215221454119. The reversal of 13215221454044 is 44045412251231.

It is a junction number, because it is equal to n+sod(n) for n = 13215221453989 and 13215221454007.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 9332702 + ... + 10655034.

It is an arithmetic number, because the mean of its divisors is an integer number (671694394826).

Almost surely, 2^{13215221454044} is an apocalyptic number.

It is an amenable number.

13215221454044 is a deficient number, since it is larger than the sum of its proper divisors (10965776759692).

13215221454044 is a wasteful number, since it uses less digits than its factorization.

13215221454044 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1327106 (or 1327081 counting only the distinct ones).

The product of its (nonzero) digits is 153600, while the sum is 38.

The spelling of 13215221454044 in words is "thirteen trillion, two hundred fifteen billion, two hundred twenty-one million, four hundred fifty-four thousand, forty-four".