220021100122 has 4 divisors (see below), whose sum is σ = 330031650186. Its totient is φ = 110010550060.

The previous prime is 220021100099. The next prime is 220021100149. The reversal of 220021100122 is 221001120022.

It is a happy number.

220021100122 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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., 151905842001 + 68115258121 = 389751^2 + 260989^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55005275029 + ... + 55005275032.

Almost surely, 2^220021100122 is an apocalyptic number.

220021100122 is a deficient number, since it is larger than the sum of its proper divisors (110010550064).

220021100122 is a wasteful number, since it uses less digits than its factorization.

220021100122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 110010550063.

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 220021100122 its reverse (221001120022), we get a palindrome (441022220144).

The spelling of 220021100122 in words is "two hundred twenty billion, twenty-one million, one hundred thousand, one hundred twenty-two".