1201212812 has 12 divisors (see below), whose sum is σ = 2193519216. Its totient is φ = 574493040.

The previous prime is 1201212811. The next prime is 1201212827. The reversal of 1201212812 is 2182121021.

It is not an unprimeable number, because it can be changed into a prime (1201212811) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6528239 + ... + 6528422.

It is an arithmetic number, because the mean of its divisors is an integer number (182793268).

Almost surely, 2^1201212812 is an apocalyptic number.

It is an amenable number.

1201212812 is a deficient number, since it is larger than the sum of its proper divisors (992306404).

1201212812 is a wasteful number, since it uses less digits than its factorization.

1201212812 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13056688 (or 13056686 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 20.

The square root of 1201212812 is about 34658.5171638949. The cubic root of 1201212812 is about 1063.0164500492.

Adding to 1201212812 its reverse (2182121021), we get a palindrome (3383333833).

The spelling of 1201212812 in words is "one billion, two hundred one million, two hundred twelve thousand, eight hundred twelve".