221101110122 has 4 divisors (see below), whose sum is σ = 331651665186. Its totient is φ = 110550555060.

The previous prime is 221101110107. The next prime is 221101110157. The reversal of 221101110122 is 221011101122.

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., 211453745281 + 9647364841 = 459841^2 + 98221^2 .

It is a junction number, because it is equal to n+sod(n) for n = 221101110097 and 221101110106.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55275277529 + ... + 55275277532.

Almost surely, 2^221101110122 is an apocalyptic number.

221101110122 is a deficient number, since it is larger than the sum of its proper divisors (110550555064).

221101110122 is a wasteful number, since it uses less digits than its factorization.

221101110122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 110550555063.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 221101110122 its reverse (221011101122), we get a palindrome (442112211244).

The spelling of 221101110122 in words is "two hundred twenty-one billion, one hundred one million, one hundred ten thousand, one hundred twenty-two".