12219201250 has 40 divisors (see below), whose sum is σ = 23071174236. Its totient is φ = 4851936000.

The previous prime is 12219201229. The next prime is 12219201277. The reversal of 12219201250 is 5210291221.

It can be written as a sum of positive squares in 10 ways, for example, as 183575401 + 12035625849 = 13549^2 + 109707^2 .

It is a Harshad number since it is a multiple of its sum of digits (25).

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 135574 + ... + 206926.

Almost surely, 2^12219201250 is an apocalyptic number.

12219201250 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12219201250 is a deficient number, since it is larger than the sum of its proper divisors (10851972986).

12219201250 is an equidigital number, since it uses as much as digits as its factorization.

12219201250 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71512 (or 71497 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 25.

Adding to 12219201250 its reverse (5210291221), we get a palindrome (17429492471).

The spelling of 12219201250 in words is "twelve billion, two hundred nineteen million, two hundred one thousand, two hundred fifty".