1223001110121 has 24 divisors (see below), whose sum is σ = 1897188638400. Its totient is φ = 698751319392.

The previous prime is 1223001110113. The next prime is 1223001110161. The reversal of 1223001110121 is 1210111003221.

It is not a de Polignac number, because 1223001110121 - 2³ = 1223001110113 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1223001110121.

It is not an unprimeable number, because it can be changed into a prime (1223001110161) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 339675 + ... + 1600431.

It is an arithmetic number, because the mean of its divisors is an integer number (79049526600).

Almost surely, 2^{1223001110121} is an apocalyptic number.

It is an amenable number.

1223001110121 is a deficient number, since it is larger than the sum of its proper divisors (674187528279).

1223001110121 is a wasteful number, since it uses less digits than its factorization.

1223001110121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1267373 (or 1267366 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 15.

Adding to 1223001110121 its reverse (1210111003221), we get a palindrome (2433112113342).

The spelling of 1223001110121 in words is "one trillion, two hundred twenty-three billion, one million, one hundred ten thousand, one hundred twenty-one".