2221056554623 has 4 divisors (see below), whose sum is σ = 2292703540288. Its totient is φ = 2149409568960.

The previous prime is 2221056554621. The next prime is 2221056554627. The reversal of 2221056554623 is 3264556501222.

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

It is a cyclic number.

It is not a de Polignac number, because 2221056554623 - 2¹ = 2221056554621 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2221056554623.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2221056554621) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 35823492786 + ... + 35823492847.

It is an arithmetic number, because the mean of its divisors is an integer number (573175885072).

Almost surely, 2^{2221056554623} is an apocalyptic number.

2221056554623 is a deficient number, since it is larger than the sum of its proper divisors (71646985665).

2221056554623 is an equidigital number, since it uses as much as digits as its factorization.

2221056554623 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71646985664.

The product of its (nonzero) digits is 864000, while the sum is 43.

The spelling of 2221056554623 in words is "two trillion, two hundred twenty-one billion, fifty-six million, five hundred fifty-four thousand, six hundred twenty-three".