221799860502 has 16 divisors (see below), whose sum is σ = 483926968512. Its totient is φ = 67212078920.

The previous prime is 221799860497. The next prime is 221799860573. The reversal of 221799860502 is 205068997122.

It is a congruent number.

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 7 ways as a sum of consecutive naturals, for example, 1680301908 + ... + 1680302039.

It is an arithmetic number, because the mean of its divisors is an integer number (30245435532).

Almost surely, 2^221799860502 is an apocalyptic number.

221799860502 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

221799860502 is an abundant number, since it is smaller than the sum of its proper divisors (262127108010).

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

221799860502 is a wasteful number, since it uses less digits than its factorization.

221799860502 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3360603963.

The product of its (nonzero) digits is 1088640, while the sum is 51.

The spelling of 221799860502 in words is "two hundred twenty-one billion, seven hundred ninety-nine million, eight hundred sixty thousand, five hundred two".