1211985224 has 32 divisors (see below), whose sum is σ = 2394576000. Its totient is φ = 573498432.

The previous prime is 1211985223. The next prime is 1211985227. The reversal of 1211985224 is 4225891121.

It is not an unprimeable number, because it can be changed into a prime (1211985223) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 164042 + ... + 171270.

It is an arithmetic number, because the mean of its divisors is an integer number (74830500).

Almost surely, 2^1211985224 is an apocalyptic number.

It is an amenable number.

1211985224 is a deficient number, since it is larger than the sum of its proper divisors (1182590776).

1211985224 is a wasteful number, since it uses less digits than its factorization.

1211985224 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8357 (or 8353 counting only the distinct ones).

The product of its digits is 11520, while the sum is 35.

The square root of 1211985224 is about 34813.5781556565. The cubic root of 1211985224 is about 1066.1846894545.

The spelling of 1211985224 in words is "one billion, two hundred eleven million, nine hundred eighty-five thousand, two hundred twenty-four".