7221241447556 has 24 divisors (see below), whose sum is σ = 12764872995840. Its totient is φ = 3574281703232.

The previous prime is 7221241447451. The next prime is 7221241447559. The reversal of 7221241447556 is 6557441421227.

It is not an unprimeable number, because it can be changed into a prime (7221241447559) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18156260 + ... + 18549723.

It is an arithmetic number, because the mean of its divisors is an integer number (531869708160).

Almost surely, 2^{7221241447556} is an apocalyptic number.

It is an amenable number.

7221241447556 is a deficient number, since it is larger than the sum of its proper divisors (5543631548284).

7221241447556 is a wasteful number, since it uses less digits than its factorization.

7221241447556 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36706483 (or 36706481 counting only the distinct ones).

The product of its digits is 3763200, while the sum is 50.

The spelling of 7221241447556 in words is "seven trillion, two hundred twenty-one billion, two hundred forty-one million, four hundred forty-seven thousand, five hundred fifty-six".