1201331012 has 48 divisors (see below), whose sum is σ = 2536679040. Its totient is φ = 486300672.

The previous prime is 1201330987. The next prime is 1201331057. The reversal of 1201331012 is 2101331021.

It is a Harshad number since it is a multiple of its sum of digits (14).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 184598 + ... + 190994.

It is an arithmetic number, because the mean of its divisors is an integer number (52847480).

Almost surely, 2^1201331012 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 1201331012, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1268339520).

1201331012 is an abundant number, since it is smaller than the sum of its proper divisors (1335348028).

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

1201331012 is a wasteful number, since it uses less digits than its factorization.

1201331012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6780 (or 6778 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 14.

The square root of 1201331012 is about 34660.2223305045. Note that the first 3 decimals coincide. The cubic root of 1201331012 is about 1063.0513160397.

Adding to 1201331012 its reverse (2101331021), we get a palindrome (3302662033).

Subtracting 1201331012 from its reverse (2101331021), we obtain a palindrome (900000009).

The spelling of 1201331012 in words is "one billion, two hundred one million, three hundred thirty-one thousand, twelve".