221041364648424 has 16 divisors (see below), whose sum is σ = 552603411621120. Its totient is φ = 73680454882800.

The previous prime is 221041364648371. The next prime is 221041364648471. The reversal of 221041364648424 is 424846463140122.

It is a happy number.

It is a super-2 number, since 2×221041364648424² (a number of 29 digits) contains 22 as substring.

It is a hoax number, since the sum of its digits (51) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4605028430152 + ... + 4605028430199.

It is an arithmetic number, because the mean of its divisors is an integer number (34537713226320).

Almost surely, 2^{221041364648424} is an apocalyptic number.

221041364648424 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

221041364648424 is an abundant number, since it is smaller than the sum of its proper divisors (331562046972696).

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

221041364648424 is a wasteful number, since it uses less digits than its factorization.

221041364648424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9210056860360 (or 9210056860356 counting only the distinct ones).

The product of its (nonzero) digits is 7077888, while the sum is 51.

The spelling of 221041364648424 in words is "two hundred twenty-one trillion, forty-one billion, three hundred sixty-four million, six hundred forty-eight thousand, four hundred twenty-four".