23121021100222 has 4 divisors (see below), whose sum is σ = 34681531650336. Its totient is φ = 11560510550110.

The previous prime is 23121021100207. The next prime is 23121021100259. The reversal of 23121021100222 is 22200112012132.

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

It is a self number, because there is not a number n which added to its sum of digits gives 23121021100222.

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 5780255275054 + ... + 5780255275057.

It is an arithmetic number, because the mean of its divisors is an integer number (8670382912584).

Almost surely, 2^{23121021100222} is an apocalyptic number.

23121021100222 is a deficient number, since it is larger than the sum of its proper divisors (11560510550114).

23121021100222 is a wasteful number, since it uses less digits than its factorization.

23121021100222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11560510550113.

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

Adding to 23121021100222 its reverse (22200112012132), we get a palindrome (45321133112354).

The spelling of 23121021100222 in words is "twenty-three trillion, one hundred twenty-one billion, twenty-one million, one hundred thousand, two hundred twenty-two".