2210123121 has 4 divisors (see below), whose sum is σ = 2946830832. Its totient is φ = 1473415412.

The previous prime is 2210123093. The next prime is 2210123137. The reversal of 2210123121 is 1213210122.

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 a cyclic number.

It is not a de Polignac number, because 2210123121 - 2⁶ = 2210123057 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2210123121.

It is not an unprimeable number, because it can be changed into a prime (2210123191) 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, 368353851 + ... + 368353856.

It is an arithmetic number, because the mean of its divisors is an integer number (736707708).

Almost surely, 2^2210123121 is an apocalyptic number.

It is an amenable number.

2210123121 is a deficient number, since it is larger than the sum of its proper divisors (736707711).

2210123121 is an equidigital number, since it uses as much as digits as its factorization.

2210123121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 736707710.

The product of its (nonzero) digits is 48, while the sum is 15.

The square root of 2210123121 is about 47011.9465774392. The cubic root of 2210123121 is about 1302.5832501684.

Adding to 2210123121 its reverse (1213210122), we get a palindrome (3423333243).

The spelling of 2210123121 in words is "two billion, two hundred ten million, one hundred twenty-three thousand, one hundred twenty-one".