1012201321013 has 4 divisors (see below), whose sum is σ = 1012203333708. Its totient is φ = 1012199308320.

The previous prime is 1012201320947. The next prime is 1012201321063. The reversal of 1012201321013 is 3101231022101.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 339238683364 + 672962637649 = 582442^2 + 820343^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1012201321013 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1012201320982 and 1012201321000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1012201321063) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 468545 + ... + 1497977.

It is an arithmetic number, because the mean of its divisors is an integer number (253050833427).

Almost surely, 2^{1012201321013} is an apocalyptic number.

It is an amenable number.

1012201321013 is a deficient number, since it is larger than the sum of its proper divisors (2012695).

1012201321013 is an equidigital number, since it uses as much as digits as its factorization.

1012201321013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2012694.

The product of its (nonzero) digits is 72, while the sum is 17.

Adding to 1012201321013 its reverse (3101231022101), we get a palindrome (4113432343114).

The spelling of 1012201321013 in words is "one trillion, twelve billion, two hundred one million, three hundred twenty-one thousand, thirteen".