199221132 has 96 divisors (see below), whose sum is σ = 525305088. Its totient is φ = 58240000.

The previous prime is 199221119. The next prime is 199221133. The reversal of 199221132 is 231122991.

It is a super-2 number, since 2×199221132² = 79378118870722848, which contains 22 as substring.

It is a Smith number, since the sum of its digits (30) coincides with the sum of the digits of its prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 199221132.

It is not an unprimeable number, because it can be changed into a prime (199221133) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 708832 + ... + 709112.

It is an arithmetic number, because the mean of its divisors is an integer number (5471928).

Almost surely, 2^199221132 is an apocalyptic number.

199221132 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 199221132, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (262652544).

199221132 is an abundant number, since it is smaller than the sum of its proper divisors (326083956).

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

199221132 is a wasteful number, since it uses less digits than its factorization.

199221132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 471 (or 469 counting only the distinct ones).

The product of its digits is 1944, while the sum is 30.

The square root of 199221132 is about 14114.5716194293. The cubic root of 199221132 is about 584.0434187710.

The spelling of 199221132 in words is "one hundred ninety-nine million, two hundred twenty-one thousand, one hundred thirty-two".