220421122 has 4 divisors (see below), whose sum is σ = 330631686. Its totient is φ = 110210560.

The previous prime is 220421111. The next prime is 220421153. The reversal of 220421122 is 221124022.

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., 115584001 + 104837121 = 10751^2 + 10239^2 .

It is a junction number, because it is equal to n+sod(n) for n = 220421096 and 220421105.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55105279 + ... + 55105282.

Almost surely, 2^220421122 is an apocalyptic number.

220421122 is a deficient number, since it is larger than the sum of its proper divisors (110210564).

220421122 is a wasteful number, since it uses less digits than its factorization.

220421122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 110210563.

The product of its (nonzero) digits is 128, while the sum is 16.

The square root of 220421122 is about 14846.5862069366. The cubic root of 220421122 is about 604.0660151081.

Adding to 220421122 its reverse (221124022), we get a palindrome (441545144).

The spelling of 220421122 in words is "two hundred twenty million, four hundred twenty-one thousand, one hundred twenty-two".