20123220037 has 2 divisors, whose sum is σ = 20123220038. Its totient is φ = 20123220036.

The previous prime is 20123220001. The next prime is 20123220067. The reversal of 20123220037 is 73002232102.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 18372718116 + 1750501921 = 135546^2 + 41839^2 .

It is a cyclic number.

It is not a de Polignac number, because 20123220037 - 2¹⁵ = 20123187269 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20123220067) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10061610018 + 10061610019.

It is an arithmetic number, because the mean of its divisors is an integer number (10061610019).

Almost surely, 2^20123220037 is an apocalyptic number.

It is an amenable number.

20123220037 is a deficient number, since it is larger than the sum of its proper divisors (1).

20123220037 is an equidigital number, since it uses as much as digits as its factorization.

20123220037 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1008, while the sum is 22.

Adding to 20123220037 its reverse (73002232102), we get a palindrome (93125452139).

The spelling of 20123220037 in words is "twenty billion, one hundred twenty-three million, two hundred twenty thousand, thirty-seven".