199211089320 has 48 divisors (see below), whose sum is σ = 647436041460. Its totient is φ = 53122957056.

The previous prime is 199211089313. The next prime is 199211089321. The reversal of 199211089320 is 23980112991.

It can be written as a sum of positive squares in 2 ways, for example, as 177667308036 + 21543781284 = 421506^2 + 146778^2 .

It is a super-2 number, since 2×199211089320² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is not an unprimeable number, because it can be changed into a prime (199211089321) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 276681709 + ... + 276682428.

Almost surely, 2^199211089320 is an apocalyptic number.

199211089320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

199211089320 is an abundant number, since it is smaller than the sum of its proper divisors (448224952140).

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

199211089320 is a wasteful number, since it uses less digits than its factorization.

199211089320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 553364154 (or 553364147 counting only the distinct ones).

The product of its (nonzero) digits is 69984, while the sum is 45.

The spelling of 199211089320 in words is "one hundred ninety-nine billion, two hundred eleven million, eighty-nine thousand, three hundred twenty".