221102199974 has 4 divisors (see below), whose sum is σ = 331653299964. Its totient is φ = 110551099986.

The previous prime is 221102199953. The next prime is 221102199977. The reversal of 221102199974 is 479991201122.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221102199977) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55275549992 + ... + 55275549995.

It is an arithmetic number, because the mean of its divisors is an integer number (82913324991).

Almost surely, 2^221102199974 is an apocalyptic number.

221102199974 is a deficient number, since it is larger than the sum of its proper divisors (110551099990).

221102199974 is a wasteful number, since it uses less digits than its factorization.

221102199974 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 110551099989.

The product of its (nonzero) digits is 163296, while the sum is 47.

The spelling of 221102199974 in words is "two hundred twenty-one billion, one hundred two million, one hundred ninety-nine thousand, nine hundred seventy-four".