1213320201012 has 72 divisors (see below), whose sum is σ = 3228626637600. Its totient is φ = 383129828928.

The previous prime is 1213320201011. The next prime is 1213320201053. The reversal of 1213320201012 is 2101020233121.

1213320201012 is a `hidden beast` number, since 121 + 332 + 0 + 201 + 0 + 12 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1213320201011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 13242414 + ... + 13333722.

Almost surely, 2^{1213320201012} is an apocalyptic number.

1213320201012 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1213320201012 is an abundant number, since it is smaller than the sum of its proper divisors (2015306436588).

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

1213320201012 is a wasteful number, since it uses less digits than its factorization.

1213320201012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 110765 (or 110760 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

Adding to 1213320201012 its reverse (2101020233121), we get a palindrome (3314340434133).

The spelling of 1213320201012 in words is "one trillion, two hundred thirteen billion, three hundred twenty million, two hundred one thousand, twelve".