112212220123 has 4 divisors (see below), whose sum is σ = 113068802088. Its totient is φ = 111355638160.

The previous prime is 112212220121. The next prime is 112212220291. The reversal of 112212220123 is 321022212211.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 321022212211 = 435637 ⋅736903.

It is a cyclic number.

It is not a de Polignac number, because 112212220123 - 2¹ = 112212220121 is a prime.

It is a super-2 number, since 2×112212220123² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 112212220123.

It is not an unprimeable number, because it can be changed into a prime (112212220121) 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, 428290786 + ... + 428291047.

It is an arithmetic number, because the mean of its divisors is an integer number (28267200522).

Almost surely, 2^112212220123 is an apocalyptic number.

112212220123 is a deficient number, since it is larger than the sum of its proper divisors (856581965).

112212220123 is an equidigital number, since it uses as much as digits as its factorization.

112212220123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 856581964.

The product of its (nonzero) digits is 192, while the sum is 19.

Adding to 112212220123 its reverse (321022212211), we get a palindrome (433234432334).

The spelling of 112212220123 in words is "one hundred twelve billion, two hundred twelve million, two hundred twenty thousand, one hundred twenty-three".