123020221123 has 2 divisors, whose sum is σ = 123020221124. Its totient is φ = 123020221122.

The previous prime is 123020221073. The next prime is 123020221133. The reversal of 123020221123 is 321122020321.

It is a strong prime.

It is an emirp because it is prime and its reverse (321122020321) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 123020221123 - 2⁹ = 123020220611 is a prime.

It is a super-2 number, since 2×123020221123² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 123020221123.

It is not a weakly prime, because it can be changed into another prime (123020221133) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61510110561 + 61510110562.

It is an arithmetic number, because the mean of its divisors is an integer number (61510110562).

Almost surely, 2^123020221123 is an apocalyptic number.

123020221123 is a deficient number, since it is larger than the sum of its proper divisors (1).

123020221123 is an equidigital number, since it uses as much as digits as its factorization.

123020221123 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 123020221123 its reverse (321122020321), we get a palindrome (444142241444).

The spelling of 123020221123 in words is "one hundred twenty-three billion, twenty million, two hundred twenty-one thousand, one hundred twenty-three".