221122120100122 has 4 divisors (see below), whose sum is σ = 331683180150186. Its totient is φ = 110561060050060.

The previous prime is 221122120100099. The next prime is 221122120100131. The reversal of 221122120100122 is 221001021221122.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 138421084032001 + 82701036068121 = 11765249^2 + 9094011^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 221122120100122.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55280530025029 + ... + 55280530025032.

Almost surely, 2^{221122120100122} is an apocalyptic number.

221122120100122 is a deficient number, since it is larger than the sum of its proper divisors (110561060050064).

221122120100122 is a wasteful number, since it uses less digits than its factorization.

221122120100122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 110561060050063.

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 221122120100122 its reverse (221001021221122), we get a palindrome (442123141321244).

The spelling of 221122120100122 in words is "two hundred twenty-one trillion, one hundred twenty-two billion, one hundred twenty million, one hundred thousand, one hundred twenty-two".