2100000021223 has 8 divisors (see below), whose sum is σ = 2261619568208. Its totient is φ = 1938392057664.

The previous prime is 2100000021193. The next prime is 2100000021281. The reversal of 2100000021223 is 3221200000012.

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 2100000021223 - 2⁵ = 2100000021191 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (13).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2100000021293) 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 7 ways as a sum of consecutive naturals, for example, 2517486 + ... + 3246187.

It is an arithmetic number, because the mean of its divisors is an integer number (282702446026).

Almost surely, 2^{2100000021223} is an apocalyptic number.

2100000021223 is a deficient number, since it is larger than the sum of its proper divisors (161619546985).

2100000021223 is a wasteful number, since it uses less digits than its factorization.

2100000021223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5791713.

The product of its (nonzero) digits is 48, while the sum is 13.

Adding to 2100000021223 its reverse (3221200000012), we get a palindrome (5321200021235).

The spelling of 2100000021223 in words is "two trillion, one hundred billion, twenty-one thousand, two hundred twenty-three".