222121132 has 6 divisors (see below), whose sum is σ = 388711988. Its totient is φ = 111060564.

The previous prime is 222121129. The next prime is 222121171. The reversal of 222121132 is 231121222.

It is a happy number.

It is a super-2 number, since 2×222121132² = 98675594561922848, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27765138 + ... + 27765145.

Almost surely, 2^222121132 is an apocalyptic number.

It is an amenable number.

222121132 is a deficient number, since it is larger than the sum of its proper divisors (166590856).

222121132 is a wasteful number, since it uses less digits than its factorization.

222121132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55530287 (or 55530285 counting only the distinct ones).

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

The square root of 222121132 is about 14903.7287951707. The cubic root of 222121132 is about 605.6150037844.

Adding to 222121132 its reverse (231121222), we get a palindrome (453242354).

The spelling of 222121132 in words is "two hundred twenty-two million, one hundred twenty-one thousand, one hundred thirty-two".