123222233021 has 4 divisors (see below), whose sum is σ = 123223192092. Its totient is φ = 123221273952.

The previous prime is 123222232963. The next prime is 123222233047. The reversal of 123222233021 is 120332222321.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 64117329796 + 59104903225 = 253214^2 + 243115^2 .

It is a cyclic number.

It is not a de Polignac number, because 123222233021 - 2¹⁸ = 123221970877 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123222238021) 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, 250280 + ... + 555953.

It is an arithmetic number, because the mean of its divisors is an integer number (30805798023).

Almost surely, 2^123222233021 is an apocalyptic number.

It is an amenable number.

123222233021 is a deficient number, since it is larger than the sum of its proper divisors (959071).

123222233021 is an equidigital number, since it uses as much as digits as its factorization.

123222233021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 959070.

The product of its (nonzero) digits is 1728, while the sum is 23.

Adding to 123222233021 its reverse (120332222321), we get a palindrome (243554455342).

The spelling of 123222233021 in words is "one hundred twenty-three billion, two hundred twenty-two million, two hundred thirty-three thousand, twenty-one".