221121201122 has 8 divisors (see below), whose sum is σ = 331684773456. Its totient is φ = 110559609972.

The previous prime is 221121201113. The next prime is 221121201151. The reversal of 221121201122 is 221102121122.

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

It is a self number, because there is not a number n which added to its sum of digits gives 221121201122.

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, 174788 + ... + 687599.

It is an arithmetic number, because the mean of its divisors is an integer number (41460596682).

Almost surely, 2^221121201122 is an apocalyptic number.

221121201122 is a deficient number, since it is larger than the sum of its proper divisors (110563572334).

221121201122 is a wasteful number, since it uses less digits than its factorization.

221121201122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 990592.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 221121201122 its reverse (221102121122), we get a palindrome (442223322244).

The spelling of 221121201122 in words is "two hundred twenty-one billion, one hundred twenty-one million, two hundred one thousand, one hundred twenty-two".