22120220137 has 2 divisors, whose sum is σ = 22120220138. Its totient is φ = 22120220136.

The previous prime is 22120220081. The next prime is 22120220149. The reversal of 22120220137 is 73102202122.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 21450238681 + 669981456 = 146459^2 + 25884^2 .

It is a cyclic number.

It is not a de Polignac number, because 22120220137 - 2⁷ = 22120220009 is a prime.

It is not a weakly prime, because it can be changed into another prime (22120229137) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11060110068 + 11060110069.

It is an arithmetic number, because the mean of its divisors is an integer number (11060110069).

Almost surely, 2^22120220137 is an apocalyptic number.

It is an amenable number.

22120220137 is a deficient number, since it is larger than the sum of its proper divisors (1).

22120220137 is an equidigital number, since it uses as much as digits as its factorization.

22120220137 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 672, while the sum is 22.

Adding to 22120220137 its reverse (73102202122), we get a palindrome (95222422259).

The spelling of 22120220137 in words is "twenty-two billion, one hundred twenty million, two hundred twenty thousand, one hundred thirty-seven".