1201216912 has 40 divisors (see below), whose sum is σ = 2662059776. Its totient is φ = 514377216.

The previous prime is 1201216901. The next prime is 1201216943. The reversal of 1201216912 is 2196121021.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 155608 + ... + 163144.

Almost surely, 2^1201216912 is an apocalyptic number.

It is an amenable number.

1201216912 is an abundant number, since it is smaller than the sum of its proper divisors (1460842864).

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

1201216912 is a wasteful number, since it uses less digits than its factorization.

1201216912 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8975 (or 8969 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 25.

The square root of 1201216912 is about 34658.5763123646. The cubic root of 1201216912 is about 1063.0176594831.

Adding to 1201216912 its reverse (2196121021), we get a palindrome (3397337933).

The spelling of 1201216912 in words is "one billion, two hundred one million, two hundred sixteen thousand, nine hundred twelve".