221055546756 has 24 divisors (see below), whose sum is σ = 562686846624. Its totient is φ = 66986529280.

The previous prime is 221055546727. The next prime is 221055546757. The reversal of 221055546756 is 657645550122.

It is a hoax number, since the sum of its digits (48) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (221055546757) 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, 837331485 + ... + 837331748.

It is an arithmetic number, because the mean of its divisors is an integer number (23445285276).

Almost surely, 2^221055546756 is an apocalyptic number.

It is an amenable number.

221055546756 is an abundant number, since it is smaller than the sum of its proper divisors (341631299868).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

221055546756 is a wasteful number, since it uses less digits than its factorization.

221055546756 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1674663251 (or 1674663249 counting only the distinct ones).

The product of its (nonzero) digits is 2520000, while the sum is 48.

The spelling of 221055546756 in words is "two hundred twenty-one billion, fifty-five million, five hundred forty-six thousand, seven hundred fifty-six".