23121101222207 has 4 divisors (see below), whose sum is σ = 23268369383016. Its totient is φ = 22973833061400.

The previous prime is 23121101222183. The next prime is 23121101222221. The reversal of 23121101222207 is 70222210112132.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 23121101222207 - 2³² = 23116806254911 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 (23121101222237) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 73634080169 + ... + 73634080482.

It is an arithmetic number, because the mean of its divisors is an integer number (5817092345754).

Almost surely, 2^{23121101222207} is an apocalyptic number.

23121101222207 is a deficient number, since it is larger than the sum of its proper divisors (147268160809).

23121101222207 is a wasteful number, since it uses less digits than its factorization.

23121101222207 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 147268160808.

The product of its (nonzero) digits is 1344, while the sum is 26.

Adding to 23121101222207 its reverse (70222210112132), we get a palindrome (93343311334339).

The spelling of 23121101222207 in words is "twenty-three trillion, one hundred twenty-one billion, one hundred one million, two hundred twenty-two thousand, two hundred seven".