2001010223101 has 4 divisors (see below), whose sum is σ = 2001014106652. Its totient is φ = 2001006339552.

The previous prime is 2001010223039. The next prime is 2001010223123. The reversal of 2001010223101 is 1013220101002.

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 733122963076 + 1267887260025 = 856226^2 + 1126005^2 .

It is a cyclic number.

It is not a de Polignac number, because 2001010223101 - 2³⁷ = 1863571269629 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 (2001010923101) 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, 1024440 + ... + 2247553.

It is an arithmetic number, because the mean of its divisors is an integer number (500253526663).

Almost surely, 2^{2001010223101} is an apocalyptic number.

It is an amenable number.

2001010223101 is a deficient number, since it is larger than the sum of its proper divisors (3883551).

2001010223101 is an equidigital number, since it uses as much as digits as its factorization.

2001010223101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3883550.

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

Adding to 2001010223101 its reverse (1013220101002), we get a palindrome (3014230324103).

The spelling of 2001010223101 in words is "two trillion, one billion, ten million, two hundred twenty-three thousand, one hundred one".