221011202122 has 16 divisors (see below), whose sum is σ = 338704284672. Its totient is φ = 108133613280.

The previous prime is 221011202117. The next prime is 221011202131. The reversal of 221011202122 is 221202110122.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 221011202096 and 221011202105.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5941204 + ... + 5978287.

It is an arithmetic number, because the mean of its divisors is an integer number (21169017792).

Almost surely, 2^221011202122 is an apocalyptic number.

221011202122 is a deficient number, since it is larger than the sum of its proper divisors (117693082550).

221011202122 is a wasteful number, since it uses less digits than its factorization.

221011202122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11919693.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 221011202122 its reverse (221202110122), we get a palindrome (442213312244).

The spelling of 221011202122 in words is "two hundred twenty-one billion, eleven million, two hundred two thousand, one hundred twenty-two".