1200220312 has 16 divisors (see below), whose sum is σ = 2284002360. Its totient is φ = 591153024.

The previous prime is 1200220283. The next prime is 1200220321. The reversal of 1200220312 is 2130220021.

It is a junction number, because it is equal to n+sod(n) for n = 1200220292 and 1200220301.

It is a congruent number.

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, 1119073 + ... + 1120144.

Almost surely, 2^1200220312 is an apocalyptic number.

It is an amenable number.

1200220312 is a deficient number, since it is larger than the sum of its proper divisors (1083782048).

1200220312 is a wasteful number, since it uses less digits than its factorization.

1200220312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2239290 (or 2239286 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 13.

The square root of 1200220312 is about 34644.1959352501. The cubic root of 1200220312 is about 1062.7235975462.

Adding to 1200220312 its reverse (2130220021), we get a palindrome (3330440333).

The spelling of 1200220312 in words is "one billion, two hundred million, two hundred twenty thousand, three hundred twelve".