1220021322 has 32 divisors (see below), whose sum is σ = 2641386048. Its totient is φ = 373441536.

The previous prime is 1220021311. The next prime is 1220021323. The reversal of 1220021322 is 2231200221.

It is a happy number.

It is a super-2 number, since 2×1220021322² = 2976904052269255368, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1220021323) 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 15 ways as a sum of consecutive naturals, for example, 25468 + ... + 55575.

It is an arithmetic number, because the mean of its divisors is an integer number (82543314).

Almost surely, 2^1220021322 is an apocalyptic number.

1220021322 is an abundant number, since it is smaller than the sum of its proper divisors (1421364726).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1220021322 is a wasteful number, since it uses less digits than its factorization.

1220021322 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81254.

The product of its (nonzero) digits is 96, while the sum is 15.

The square root of 1220021322 is about 34928.8036153545. The cubic root of 1220021322 is about 1068.5359550282.

Adding to 1220021322 its reverse (2231200221), we get a palindrome (3451221543).

The spelling of 1220021322 in words is "one billion, two hundred twenty million, twenty-one thousand, three hundred twenty-two".