1201220512 has 24 divisors (see below), whose sum is σ = 2365793892. Its totient is φ = 600384000.

The previous prime is 1201220509. The next prime is 1201220551. The reversal of 1201220512 is 2150221021.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 1172103696 + 29116816 = 34236^2 + 5396^2 .

It is a Harshad number since it is a multiple of its sum of digits (16).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 108012 + ... + 118612.

Almost surely, 2^1201220512 is an apocalyptic number.

It is an amenable number.

1201220512 is a deficient number, since it is larger than the sum of its proper divisors (1164573380).

1201220512 is a wasteful number, since it uses less digits than its factorization.

1201220512 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14152 (or 14144 counting only the distinct ones).

The product of its (nonzero) digits is 80, while the sum is 16.

The square root of 1201220512 is about 34658.6282475230. The cubic root of 1201220512 is about 1063.0187214228.

Adding to 1201220512 its reverse (2150221021), we get a palindrome (3351441533).

The spelling of 1201220512 in words is "one billion, two hundred one million, two hundred twenty thousand, five hundred twelve".