2212220123 has 4 divisors (see below), whose sum is σ = 2214485400. Its totient is φ = 2209954848.

The previous prime is 2212220119. The next prime is 2212220147. The reversal of 2212220123 is 3210222122.

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 2212220123 - 2² = 2212220119 is a prime.

It is a super-2 number, since 2×2212220123² = 9787835745212270258, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2212222123) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1131173 + ... + 1133126.

It is an arithmetic number, because the mean of its divisors is an integer number (553621350).

Almost surely, 2^2212220123 is an apocalyptic number.

2212220123 is a deficient number, since it is larger than the sum of its proper divisors (2265277).

2212220123 is an equidigital number, since it uses as much as digits as its factorization.

2212220123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2265276.

The product of its (nonzero) digits is 192, while the sum is 17.

The square root of 2212220123 is about 47034.2441525321. The cubic root of 2212220123 is about 1302.9950909095.

Adding to 2212220123 its reverse (3210222122), we get a palindrome (5422442245).

The spelling of 2212220123 in words is "two billion, two hundred twelve million, two hundred twenty thousand, one hundred twenty-three".