2221121132 has 24 divisors (see below), whose sum is σ = 4097790816. Its totient is φ = 1051319808.

The previous prime is 2221121129. The next prime is 2221121173. The reversal of 2221121132 is 2311211222.

It is a super-2 number, since 2×2221121132² = 9866758166033922848, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 2221121132.

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, 115523 + ... + 133370.

It is an arithmetic number, because the mean of its divisors is an integer number (170741284).

Almost surely, 2^2221121132 is an apocalyptic number.

It is an amenable number.

2221121132 is a deficient number, since it is larger than the sum of its proper divisors (1876669684).

2221121132 is a wasteful number, since it uses less digits than its factorization.

2221121132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 249017 (or 249015 counting only the distinct ones).

The product of its digits is 96, while the sum is 17.

The square root of 2221121132 is about 47128.7718066151. The cubic root of 2221121132 is about 1304.7403136579.

Adding to 2221121132 its reverse (2311211222), we get a palindrome (4532332354).

The spelling of 2221121132 in words is "two billion, two hundred twenty-one million, one hundred twenty-one thousand, one hundred thirty-two".