221221112122202 has 8 divisors (see below), whose sum is σ = 332542228502016. Its totient is φ = 110373702621532.

The previous prime is 221221112122163. The next prime is 221221112122237. The reversal of 221221112122202 is 202221211122122.

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

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 in 3 ways as a sum of consecutive naturals, for example, 118426718618 + ... + 118426720485.

It is an arithmetic number, because the mean of its divisors is an integer number (41567778562752).

Almost surely, 2^{221221112122202} is an apocalyptic number.

221221112122202 is a deficient number, since it is larger than the sum of its proper divisors (111321116379814).

221221112122202 is a wasteful number, since it uses less digits than its factorization.

221221112122202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 236853439572.

The product of its (nonzero) digits is 512, while the sum is 23.

Adding to 221221112122202 its reverse (202221211122122), we get a palindrome (423442323244324).

The spelling of 221221112122202 in words is "two hundred twenty-one trillion, two hundred twenty-one billion, one hundred twelve million, one hundred twenty-two thousand, two hundred two".