221001111012122 has 16 divisors (see below), whose sum is σ = 383115890681280. Its totient is φ = 93650551054368.

The previous prime is 221001111012113. The next prime is 221001111012137. The reversal of 221001111012122 is 221210111100122.

It is a self number, because there is not a number n which added to its sum of digits gives 221001111012122.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 88684232708 + ... + 88684235199.

It is an arithmetic number, because the mean of its divisors is an integer number (23944743167580).

Almost surely, 2^{221001111012122} is an apocalyptic number.

221001111012122 is a deficient number, since it is larger than the sum of its proper divisors (162114779669158).

221001111012122 is a wasteful number, since it uses less digits than its factorization.

221001111012122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 177368468005.

The product of its (nonzero) digits is 32, while the sum is 17.

Adding to 221001111012122 its reverse (221210111100122), we get a palindrome (442211222112244).

The spelling of 221001111012122 in words is "two hundred twenty-one trillion, one billion, one hundred eleven million, twelve thousand, one hundred twenty-two".