222021012123 has 16 divisors (see below), whose sum is σ = 339530342400. Its totient is φ = 143239362120.

The previous prime is 222021012119. The next prime is 222021012131. The reversal of 222021012123 is 321210120222.

It is not a de Polignac number, because 222021012123 - 2² = 222021012119 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 222021012096 and 222021012105.

It is not an unprimeable number, because it can be changed into a prime (222021012193) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 132628203 + ... + 132629876.

It is an arithmetic number, because the mean of its divisors is an integer number (21220646400).

Almost surely, 2^222021012123 is an apocalyptic number.

222021012123 is a deficient number, since it is larger than the sum of its proper divisors (117509330277).

222021012123 is a wasteful number, since it uses less digits than its factorization.

222021012123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 265258119 (or 265258113 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

Adding to 222021012123 its reverse (321210120222), we get a palindrome (543231132345).

The spelling of 222021012123 in words is "two hundred twenty-two billion, twenty-one million, twelve thousand, one hundred twenty-three".