2100002212101 has 4 divisors (see below), whose sum is σ = 2800002949472. Its totient is φ = 1400001474732.

The previous prime is 2100002212067. The next prime is 2100002212127. The reversal of 2100002212101 is 1012122000012.

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 2100002212101 - 2⁹ = 2100002211589 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 (2100002232101) 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, 350000368681 + ... + 350000368686.

It is an arithmetic number, because the mean of its divisors is an integer number (700000737368).

Almost surely, 2^{2100002212101} is an apocalyptic number.

It is an amenable number.

2100002212101 is a deficient number, since it is larger than the sum of its proper divisors (700000737371).

2100002212101 is an equidigital number, since it uses as much as digits as its factorization.

2100002212101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 700000737370.

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

Adding to 2100002212101 its reverse (1012122000012), we get a palindrome (3112124212113).

The spelling of 2100002212101 in words is "two trillion, one hundred billion, two million, two hundred twelve thousand, one hundred one".