2101023313021 has 8 divisors (see below), whose sum is σ = 2101619872800. Its totient is φ = 2100426848880.

The previous prime is 2101023312989. The next prime is 2101023313117. The reversal of 2101023313021 is 1203133201012.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2101023313021 - 2⁵ = 2101023312989 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2101023313021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2101023317021) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 68782770 + ... + 68813308.

It is an arithmetic number, because the mean of its divisors is an integer number (262702484100).

Almost surely, 2^{2101023313021} is an apocalyptic number.

It is an amenable number.

2101023313021 is a deficient number, since it is larger than the sum of its proper divisors (596559779).

2101023313021 is a wasteful number, since it uses less digits than its factorization.

2101023313021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47819.

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 2101023313021 its reverse (1203133201012), we get a palindrome (3304156514033).

The spelling of 2101023313021 in words is "two trillion, one hundred one billion, twenty-three million, three hundred thirteen thousand, twenty-one".