1220021122 has 8 divisors (see below), whose sum is σ = 1926349200. Its totient is φ = 577904724.

The previous prime is 1220021113. The next prime is 1220021123. The reversal of 1220021122 is 2211200221.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×1220021122² = 2976903076252277768, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1220021123) by changing a digit.

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 in 3 ways as a sum of consecutive naturals, for example, 16052872 + ... + 16052947.

It is an arithmetic number, because the mean of its divisors is an integer number (240793650).

Almost surely, 2^1220021122 is an apocalyptic number.

1220021122 is a deficient number, since it is larger than the sum of its proper divisors (706328078).

1220021122 is a wasteful number, since it uses less digits than its factorization.

1220021122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32105840.

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

The square root of 1220021122 is about 34928.8007523877. The cubic root of 1220021122 is about 1068.5358966392.

Adding to 1220021122 its reverse (2211200221), we get a palindrome (3431221343).

The spelling of 1220021122 in words is "one billion, two hundred twenty million, twenty-one thousand, one hundred twenty-two".