221121111022122 has 32 divisors (see below), whose sum is σ = 450138164353920. Its totient is φ = 72398765042240.

The previous prime is 221121111022109. The next prime is 221121111022171. The reversal of 221121111022122 is 221220111121122.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 964687713 + ... + 964916900.

It is an arithmetic number, because the mean of its divisors is an integer number (14066817636060).

Almost surely, 2^{221121111022122} is an apocalyptic number.

221121111022122 is an abundant number, since it is smaller than the sum of its proper divisors (229017053331798).

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

221121111022122 is a wasteful number, since it uses less digits than its factorization.

221121111022122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1929604958.

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

Adding to 221121111022122 its reverse (221220111121122), we get a palindrome (442341222143244).

The spelling of 221121111022122 in words is "two hundred twenty-one trillion, one hundred twenty-one billion, one hundred eleven million, twenty-two thousand, one hundred twenty-two".