221011121221122 has 32 divisors (see below), whose sum is σ = 447561024782400. Its totient is φ = 72752959328960.

The previous prime is 221011121221073. The next prime is 221011121221207. The reversal of 221011121221122 is 221122121110122.

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 15 ways as a sum of consecutive naturals, for example, 714342504 + ... + 714651827.

It is an arithmetic number, because the mean of its divisors is an integer number (13986282024450).

Almost surely, 2^{221011121221122} is an apocalyptic number.

221011121221122 is an abundant number, since it is smaller than the sum of its proper divisors (226549903561278).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

221011121221122 is a wasteful number, since it uses less digits than its factorization.

221011121221122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1428994658.

The product of its (nonzero) digits is 128, while the sum is 21.

Adding to 221011121221122 its reverse (221122121110122), we get a palindrome (442133242331244).

The spelling of 221011121221122 in words is "two hundred twenty-one trillion, eleven billion, one hundred twenty-one million, two hundred twenty-one thousand, one hundred twenty-two".