2012220123 has 16 divisors (see below), whose sum is σ = 2700247200. Its totient is φ = 1332854784.

The previous prime is 2012220121. The next prime is 2012220157. The reversal of 2012220123 is 3210222102.

It is a happy number.

It is not a de Polignac number, because 2012220123 - 2¹ = 2012220121 is a prime.

It is a super-2 number, since 2×2012220123² = 8098059646812270258, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2012220121) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 605715 + ... + 609027.

It is an arithmetic number, because the mean of its divisors is an integer number (168765450).

Almost surely, 2^2012220123 is an apocalyptic number.

2012220123 is a deficient number, since it is larger than the sum of its proper divisors (688027077).

2012220123 is a wasteful number, since it uses less digits than its factorization.

2012220123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4558.

The product of its (nonzero) digits is 96, while the sum is 15.

The square root of 2012220123 is about 44857.7766167696. The cubic root of 2012220123 is about 1262.4819063250.

Adding to 2012220123 its reverse (3210222102), we get a palindrome (5222442225).

The spelling of 2012220123 in words is "two billion, twelve million, two hundred twenty thousand, one hundred twenty-three".