1201311012 has 48 divisors (see below), whose sum is σ = 3059913024. Its totient is φ = 363792000.

The previous prime is 1201310989. The next prime is 1201311017. The reversal of 1201311012 is 2101131021.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is not an unprimeable number, because it can be changed into a prime (1201311017) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 376062 + ... + 379242.

It is an arithmetic number, because the mean of its divisors is an integer number (63748188).

Almost surely, 2^1201311012 is an apocalyptic number.

1201311012 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1201311012 is an abundant number, since it is smaller than the sum of its proper divisors (1858602012).

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

1201311012 is a wasteful number, since it uses less digits than its factorization.

1201311012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6060 (or 6058 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 12.

The square root of 1201311012 is about 34659.9338141318. The cubic root of 1201311012 is about 1063.0454167097.

Adding to 1201311012 its reverse (2101131021), we get a palindrome (3302442033).

Subtracting 1201311012 from its reverse (2101131021), we obtain a square (899820009 = 29997²).

It can be divided in two parts, 1201 and 311012, that added together give a palindrome (312213).

The spelling of 1201311012 in words is "one billion, two hundred one million, three hundred eleven thousand, twelve".