20211112220237 has 2 divisors, whose sum is σ = 20211112220238. Its totient is φ = 20211112220236.

The previous prime is 20211112220063. The next prime is 20211112220239. The reversal of 20211112220237 is 73202221111202.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 17841255179881 + 2369857040356 = 4223891^2 + 1539434^2 .

It is a cyclic number.

It is not a de Polignac number, because 20211112220237 - 2²⁰ = 20211111171661 is a prime.

Together with 20211112220239, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20211112220239) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10105556110118 + 10105556110119.

It is an arithmetic number, because the mean of its divisors is an integer number (10105556110119).

Almost surely, 2^{20211112220237} is an apocalyptic number.

It is an amenable number.

20211112220237 is a deficient number, since it is larger than the sum of its proper divisors (1).

20211112220237 is an equidigital number, since it uses as much as digits as its factorization.

20211112220237 is an evil number, because the sum of its binary digits is even.

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

Adding to 20211112220237 its reverse (73202221111202), we get a palindrome (93413333331439).

The spelling of 20211112220237 in words is "twenty trillion, two hundred eleven billion, one hundred twelve million, two hundred twenty thousand, two hundred thirty-seven".