2222121100123 has 8 divisors (see below), whose sum is σ = 2255359020560. Its totient is φ = 2188885295520.

The previous prime is 2222121100097. The next prime is 2222121100127. The reversal of 2222121100123 is 3210011212222.

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 2222121100123 - 2⁵ = 2222121100091 is a prime.

It is a super-2 number, since 2×2222121100123² (a number of 25 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 2222121100123.

It is not an unprimeable number, because it can be changed into a prime (2222121100127) 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 7 ways as a sum of consecutive naturals, for example, 1654093 + ... + 2679601.

It is an arithmetic number, because the mean of its divisors is an integer number (281919877570).

Almost surely, 2^{2222121100123} is an apocalyptic number.

2222121100123 is a deficient number, since it is larger than the sum of its proper divisors (33237920437).

2222121100123 is a wasteful number, since it uses less digits than its factorization.

2222121100123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1057917.

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

Adding to 2222121100123 its reverse (3210011212222), we get a palindrome (5432132312345).

The spelling of 2222121100123 in words is "two trillion, two hundred twenty-two billion, one hundred twenty-one million, one hundred thousand, one hundred twenty-three".