1221132022 has 16 divisors (see below), whose sum is σ = 2022293952. Its totient is φ = 548371720.

The previous prime is 1221132019. The next prime is 1221132041. The reversal of 1221132022 is 2202311221.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 1221131987 and 1221132005.

It is a congruent number.

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, 332548 + ... + 336199.

It is an arithmetic number, because the mean of its divisors is an integer number (126393372).

Almost surely, 2^1221132022 is an apocalyptic number.

1221132022 is a deficient number, since it is larger than the sum of its proper divisors (801161930).

1221132022 is a wasteful number, since it uses less digits than its factorization.

1221132022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 668843.

The product of its (nonzero) digits is 96, while the sum is 16.

The square root of 1221132022 is about 34944.6994836127. The cubic root of 1221132022 is about 1068.8601195563.

Adding to 1221132022 its reverse (2202311221), we get a palindrome (3423443243).

The spelling of 1221132022 in words is "one billion, two hundred twenty-one million, one hundred thirty-two thousand, twenty-two".