222400003123 has 4 divisors (see below), whose sum is σ = 223685552448. Its totient is φ = 221114453800.

The previous prime is 222400003117. The next prime is 222400003139. The reversal of 222400003123 is 321300004222.

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 222400003123 - 2⁹ = 222400002611 is a prime.

It is a super-2 number, since 2×222400003123² (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 222400003123.

It is not an unprimeable number, because it can be changed into a prime (222400003103) 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, 642774403 + ... + 642774748.

It is an arithmetic number, because the mean of its divisors is an integer number (55921388112).

Almost surely, 2^222400003123 is an apocalyptic number.

222400003123 is a deficient number, since it is larger than the sum of its proper divisors (1285549325).

222400003123 is a wasteful number, since it uses less digits than its factorization.

222400003123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1285549324.

The product of its (nonzero) digits is 576, while the sum is 19.

Adding to 222400003123 its reverse (321300004222), we get a palindrome (543700007345).

The spelling of 222400003123 in words is "two hundred twenty-two billion, four hundred million, three thousand, one hundred twenty-three".