221550277264 has 10 divisors (see below), whose sum is σ = 429253662230. Its totient is φ = 110775138624.

The previous prime is 221550277241. The next prime is 221550277303. The reversal of 221550277264 is 462772055122.

221550277264 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 211883454864 + 9666822400 = 460308^2 + 98320^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 221550277264.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6923446149 + ... + 6923446180.

It is an arithmetic number, because the mean of its divisors is an integer number (42925366223).

Almost surely, 2^221550277264 is an apocalyptic number.

It is an amenable number.

221550277264 is a deficient number, since it is larger than the sum of its proper divisors (207703384966).

221550277264 is a wasteful number, since it uses less digits than its factorization.

221550277264 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13846892337 (or 13846892331 counting only the distinct ones).

The product of its (nonzero) digits is 470400, while the sum is 43.

The spelling of 221550277264 in words is "two hundred twenty-one billion, five hundred fifty million, two hundred seventy-seven thousand, two hundred sixty-four".