12122221010023 has 4 divisors (see below), whose sum is σ = 12835292834160. Its totient is φ = 11409149185888.

The previous prime is 12122221009889. The next prime is 12122221010111. The reversal of 12122221010023 is 32001012222121.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12122221010023 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 (12122221010323) 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 3 ways as a sum of consecutive naturals, for example, 356535912043 + ... + 356535912076.

It is an arithmetic number, because the mean of its divisors is an integer number (3208823208540).

Almost surely, 2^{12122221010023} is an apocalyptic number.

12122221010023 is a deficient number, since it is larger than the sum of its proper divisors (713071824137).

12122221010023 is an equidigital number, since it uses as much as digits as its factorization.

12122221010023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 713071824136.

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

Adding to 12122221010023 its reverse (32001012222121), we get a palindrome (44123233232144).

The spelling of 12122221010023 in words is "twelve trillion, one hundred twenty-two billion, two hundred twenty-one million, ten thousand, twenty-three".