20123322101213 has 4 divisors (see below), whose sum is σ = 20123335303740. Its totient is φ = 20123308898688.

The previous prime is 20123322101209. The next prime is 20123322101249. The reversal of 20123322101213 is 31210122332102.

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 20031908392804 + 91413708409 = 4475702^2 + 302347^2 .

It is a cyclic number.

It is not a de Polignac number, because 20123322101213 - 2² = 20123322101209 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 (20123322101203) 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, 3963668 + ... + 7480461.

It is an arithmetic number, because the mean of its divisors is an integer number (5030833825935).

Almost surely, 2^{20123322101213} is an apocalyptic number.

It is an amenable number.

20123322101213 is a deficient number, since it is larger than the sum of its proper divisors (13202527).

20123322101213 is a wasteful number, since it uses less digits than its factorization.

20123322101213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13202526.

The product of its (nonzero) digits is 864, while the sum is 23.

Adding to 20123322101213 its reverse (31210122332102), we get a palindrome (51333444433315).

The spelling of 20123322101213 in words is "twenty trillion, one hundred twenty-three billion, three hundred twenty-two million, one hundred one thousand, two hundred thirteen".