1020202131001 has 4 divisors (see below), whose sum is σ = 1020232752372. Its totient is φ = 1020171509632.

The previous prime is 1020202130989. The next prime is 1020202131043. The reversal of 1020202131001 is 1001312020201.

1020202131001 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 621818988025 + 398383142976 = 788555^2 + 631176^2 .

It is a cyclic number.

It is not a de Polignac number, because 1020202131001 - 2⁷ = 1020202130873 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1020202131101) 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, 15260656 + ... + 15327361.

It is an arithmetic number, because the mean of its divisors is an integer number (255058188093).

Almost surely, 2^{1020202131001} is an apocalyptic number.

It is an amenable number.

1020202131001 is a deficient number, since it is larger than the sum of its proper divisors (30621371).

1020202131001 is an equidigital number, since it uses as much as digits as its factorization.

1020202131001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30621370.

The product of its (nonzero) digits is 24, while the sum is 13.

Adding to 1020202131001 its reverse (1001312020201), we get a palindrome (2021514151202).

The spelling of 1020202131001 in words is "one trillion, twenty billion, two hundred two million, one hundred thirty-one thousand, one".