220121032123 has 2 divisors, whose sum is σ = 220121032124. Its totient is φ = 220121032122.

The previous prime is 220121032121. The next prime is 220121032129. The reversal of 220121032123 is 321230121022.

220121032123 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 220121032123 - 2¹ = 220121032121 is a prime.

Together with 220121032121, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 220121032123.

It is not a weakly prime, because it can be changed into another prime (220121032121) 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 as a sum of consecutive naturals, namely, 110060516061 + 110060516062.

It is an arithmetic number, because the mean of its divisors is an integer number (110060516062).

Almost surely, 2^220121032123 is an apocalyptic number.

220121032123 is a deficient number, since it is larger than the sum of its proper divisors (1).

220121032123 is an equidigital number, since it uses as much as digits as its factorization.

220121032123 is an odious number, because the sum of its binary digits is odd.

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

Adding to 220121032123 its reverse (321230121022), we get a palindrome (541351153145).

The spelling of 220121032123 in words is "two hundred twenty billion, one hundred twenty-one million, thirty-two thousand, one hundred twenty-three".