2101220100223 has 4 divisors (see below), whose sum is σ = 2105534721040. Its totient is φ = 2096905479408.

The previous prime is 2101220100209. The next prime is 2101220100251. The reversal of 2101220100223 is 3220010221012.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2101220100223 - 2⁹ = 2101220099711 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2101220100197 and 2101220100206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2101220100293) 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, 2157309678 + ... + 2157310651.

It is an arithmetic number, because the mean of its divisors is an integer number (526383680260).

Almost surely, 2^{2101220100223} is an apocalyptic number.

2101220100223 is a deficient number, since it is larger than the sum of its proper divisors (4314620817).

2101220100223 is an equidigital number, since it uses as much as digits as its factorization.

2101220100223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4314620816.

The product of its (nonzero) digits is 96, while the sum is 16.

Adding to 2101220100223 its reverse (3220010221012), we get a palindrome (5321230321235).

The spelling of 2101220100223 in words is "two trillion, one hundred one billion, two hundred twenty million, one hundred thousand, two hundred twenty-three".