221100202201122 has 48 divisors (see below), whose sum is σ = 503694586219968. Its totient is φ = 69957581385120.

The previous prime is 221100202201121. The next prime is 221100202201139. The reversal of 221100202201122 is 221102202001122.

It is a happy number.

221100202201122 is a `hidden beast` number, since 221 + 100 + 2 + 0 + 220 + 1 + 122 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 221100202201095 and 221100202201104.

It is not an unprimeable number, because it can be changed into a prime (221100202201121) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2038336833 + ... + 2038445300.

It is an arithmetic number, because the mean of its divisors is an integer number (10493637212916).

Almost surely, 2^{221100202201122} is an apocalyptic number.

221100202201122 is an abundant number, since it is smaller than the sum of its proper divisors (282594384018846).

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

221100202201122 is a wasteful number, since it uses less digits than its factorization.

221100202201122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4076782295 (or 4076782292 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 221100202201122 its reverse (221102202001122), we get a palindrome (442202404202244).

The spelling of 221100202201122 in words is "two hundred twenty-one trillion, one hundred billion, two hundred two million, two hundred one thousand, one hundred twenty-two".