2100223121 has 8 divisors (see below), whose sum is σ = 2218312320. Its totient is φ = 1982889072.

The previous prime is 2100223087. The next prime is 2100223187. The reversal of 2100223121 is 1213220012.

It is a happy number.

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 2100223121 - 2¹⁴ = 2100206737 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2100223096 and 2100223105.

It is not an unprimeable number, because it can be changed into a prime (2100223621) 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, 183065 + ... + 194198.

It is an arithmetic number, because the mean of its divisors is an integer number (277289040).

Almost surely, 2^2100223121 is an apocalyptic number.

It is an amenable number.

2100223121 is a deficient number, since it is larger than the sum of its proper divisors (118089199).

2100223121 is a wasteful number, since it uses less digits than its factorization.

2100223121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 377575.

The product of its (nonzero) digits is 48, while the sum is 14.

The square root of 2100223121 is about 45828.1913345923. The cubic root of 2100223121 is about 1280.6245164137.

Adding to 2100223121 its reverse (1213220012), we get a palindrome (3313443133).

The spelling of 2100223121 in words is "two billion, one hundred million, two hundred twenty-three thousand, one hundred twenty-one".