20112021337 has 2 divisors, whose sum is σ = 20112021338. Its totient is φ = 20112021336.

The previous prime is 20112021301. The next prime is 20112021359. The reversal of 20112021337 is 73312021102.

It is a happy number.

It is an a-pointer prime, because the next prime (20112021359) can be obtained adding 20112021337 to its sum of digits (22).

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 17039647296 + 3072374041 = 130536^2 + 55429^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20112021337 is a prime.

It is not a weakly prime, because it can be changed into another prime (20112021637) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10056010668 + 10056010669.

It is an arithmetic number, because the mean of its divisors is an integer number (10056010669).

Almost surely, 2^20112021337 is an apocalyptic number.

It is an amenable number.

20112021337 is a deficient number, since it is larger than the sum of its proper divisors (1).

20112021337 is an equidigital number, since it uses as much as digits as its factorization.

20112021337 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 504, while the sum is 22.

Adding to 20112021337 its reverse (73312021102), we get a palindrome (93424042439).

The spelling of 20112021337 in words is "twenty billion, one hundred twelve million, twenty-one thousand, three hundred thirty-seven".