2102210021001 has 4 divisors (see below), whose sum is σ = 2802946694672. Its totient is φ = 1401473347332.

The previous prime is 2102210020993. The next prime is 2102210021029. The reversal of 2102210021001 is 1001200122012.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 2102210021001 - 2³ = 2102210020993 is a prime.

It is a super-2 number, since 2×2102210021001² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2102210021081) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 350368336831 + ... + 350368336836.

It is an arithmetic number, because the mean of its divisors is an integer number (700736673668).

Almost surely, 2^{2102210021001} is an apocalyptic number.

It is an amenable number.

2102210021001 is a deficient number, since it is larger than the sum of its proper divisors (700736673671).

2102210021001 is an equidigital number, since it uses as much as digits as its factorization.

2102210021001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 700736673670.

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 2102210021001 its reverse (1001200122012), we get a palindrome (3103410143013).

The spelling of 2102210021001 in words is "two trillion, one hundred two billion, two hundred ten million, twenty-one thousand, one".