1201201312 has 48 divisors (see below), whose sum is σ = 2474502912. Its totient is φ = 572901120.

The previous prime is 1201201301. The next prime is 1201201357. The reversal of 1201201312 is 2131021021.

It is a junction number, because it is equal to n+sod(n) for n = 1201201292 and 1201201301.

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, 290137 + ... + 294247.

It is an arithmetic number, because the mean of its divisors is an integer number (51552144).

Almost surely, 2^1201201312 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1201201312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1237251456).

1201201312 is an abundant number, since it is smaller than the sum of its proper divisors (1273301600).

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

1201201312 is a wasteful number, since it uses less digits than its factorization.

1201201312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4541 (or 4533 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 13.

The square root of 1201201312 is about 34658.3512591121. The cubic root of 1201201312 is about 1063.0130577199.

Adding to 1201201312 its reverse (2131021021), we get a palindrome (3332222333).

The spelling of 1201201312 in words is "one billion, two hundred one million, two hundred one thousand, three hundred twelve".