23211101213 has 4 divisors (see below), whose sum is σ = 23358942780. Its totient is φ = 23063259648.

The previous prime is 23211101201. The next prime is 23211101239. The reversal of 23211101213 is 31210111232.

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

It can be written as a sum of positive squares in 2 ways, for example, as 14947018564 + 8264082649 = 122258^2 + 90907^2 .

It is a cyclic number.

It is not a de Polignac number, because 23211101213 - 2²⁰ = 23210052637 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 23211101191 and 23211101200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23211101273) 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, 73920548 + ... + 73920861.

It is an arithmetic number, because the mean of its divisors is an integer number (5839735695).

Almost surely, 2^23211101213 is an apocalyptic number.

It is an amenable number.

23211101213 is a deficient number, since it is larger than the sum of its proper divisors (147841567).

23211101213 is a wasteful number, since it uses less digits than its factorization.

23211101213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 147841566.

The product of its (nonzero) digits is 72, while the sum is 17.

Adding to 23211101213 its reverse (31210111232), we get a palindrome (54421212445).

The spelling of 23211101213 in words is "twenty-three billion, two hundred eleven million, one hundred one thousand, two hundred thirteen".