21120103337 has 2 divisors, whose sum is σ = 21120103338. Its totient is φ = 21120103336.

The previous prime is 21120103321. The next prime is 21120103369. The reversal of 21120103337 is 73330102112.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 21119064976 + 1038361 = 145324^2 + 1019^2 .

It is a cyclic number.

It is not a de Polignac number, because 21120103337 - 2⁴ = 21120103321 is a prime.

It is not a weakly prime, because it can be changed into another prime (21120103397) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10560051668 + 10560051669.

It is an arithmetic number, because the mean of its divisors is an integer number (10560051669).

Almost surely, 2^21120103337 is an apocalyptic number.

It is an amenable number.

21120103337 is a deficient number, since it is larger than the sum of its proper divisors (1).

21120103337 is an equidigital number, since it uses as much as digits as its factorization.

21120103337 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 756, while the sum is 23.

Adding to 21120103337 its reverse (73330102112), we get a palindrome (94450205449).

The spelling of 21120103337 in words is "twenty-one billion, one hundred twenty million, one hundred three thousand, three hundred thirty-seven".