2101310332021 has 8 divisors (see below), whose sum is σ = 2135995617888. Its totient is φ = 2066632710000.

The previous prime is 2101310332013. The next prime is 2101310332039. The reversal of 2101310332021 is 1202330131012.

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 2101310332021 - 2³ = 2101310332013 is a prime.

It is a super-2 number, since 2×2101310332021² (a number of 25 digits) contains 22 as substring.

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 2101310332021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2101310332081) 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, 1361755 + ... + 2461096.

It is an arithmetic number, because the mean of its divisors is an integer number (266999452236).

Almost surely, 2^{2101310332021} is an apocalyptic number.

It is an amenable number.

2101310332021 is a deficient number, since it is larger than the sum of its proper divisors (34685285867).

2101310332021 is an equidigital number, since it uses as much as digits as its factorization.

2101310332021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3831923.

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

Adding to 2101310332021 its reverse (1202330131012), we get a palindrome (3303640463033).

The spelling of 2101310332021 in words is "two trillion, one hundred one billion, three hundred ten million, three hundred thirty-two thousand, twenty-one".