1001213033101 has 4 divisors (see below), whose sum is σ = 1001235084732. Its totient is φ = 1001190981472.

The previous prime is 1001213033077. The next prime is 1001213033141. The reversal of 1001213033101 is 1013303121001.

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 303436824201 + 697776208900 = 550851^2 + 835330^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1001213033101 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1001213033141) 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, 10957570 + ... + 11048563.

It is an arithmetic number, because the mean of its divisors is an integer number (250308771183).

Almost surely, 2^{1001213033101} is an apocalyptic number.

It is an amenable number.

1001213033101 is a deficient number, since it is larger than the sum of its proper divisors (22051631).

1001213033101 is an equidigital number, since it uses as much as digits as its factorization.

1001213033101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22051630.

The product of its (nonzero) digits is 54, while the sum is 16.

Adding to 1001213033101 its reverse (1013303121001), we get a palindrome (2014516154102).

The spelling of 1001213033101 in words is "one trillion, one billion, two hundred thirteen million, thirty-three thousand, one hundred one".