2212400123 has 8 divisors (see below), whose sum is σ = 2249895408. Its totient is φ = 2175099264.

The previous prime is 2212400117. The next prime is 2212400137. The reversal of 2212400123 is 3210042122.

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 2212400123 - 2⁶ = 2212400059 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2212400143) 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, 25565 + ... + 71262.

It is an arithmetic number, because the mean of its divisors is an integer number (281236926).

Almost surely, 2^2212400123 is an apocalyptic number.

2212400123 is a deficient number, since it is larger than the sum of its proper divisors (37495285).

2212400123 is an equidigital number, since it uses as much as digits as its factorization.

2212400123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 97213.

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

The square root of 2212400123 is about 47036.1576130534. The cubic root of 2212400123 is about 1303.0304298816.

Adding to 2212400123 its reverse (3210042122), we get a palindrome (5422442245).

The spelling of 2212400123 in words is "two billion, two hundred twelve million, four hundred thousand, one hundred twenty-three".