221100312232202 has 64 divisors (see below), whose sum is σ = 372920899034880. Its totient is φ = 97549265088000.

The previous prime is 221100312232187. The next prime is 221100312232211. The reversal of 221100312232202 is 202232213001122.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (23).

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 in 31 ways as a sum of consecutive naturals, for example, 7406782577 + ... + 7406812427.

It is an arithmetic number, because the mean of its divisors is an integer number (5826889047420).

Almost surely, 2^{221100312232202} is an apocalyptic number.

221100312232202 is a deficient number, since it is larger than the sum of its proper divisors (151820586802678).

221100312232202 is a wasteful number, since it uses less digits than its factorization.

221100312232202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37119.

The product of its (nonzero) digits is 1152, while the sum is 23.

Adding to 221100312232202 its reverse (202232213001122), we get a palindrome (423332525233324).

The spelling of 221100312232202 in words is "two hundred twenty-one trillion, one hundred billion, three hundred twelve million, two hundred thirty-two thousand, two hundred two".