21023301037 has 2 divisors, whose sum is σ = 21023301038. Its totient is φ = 21023301036.

The previous prime is 21023301023. The next prime is 21023301059. The reversal of 21023301037 is 73010332012.

It is a happy number.

It is an a-pointer prime, because the next prime (21023301059) can be obtained adding 21023301037 to its sum of digits (22).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 14057896356 + 6965404681 = 118566^2 + 83459^2 .

It is a cyclic number.

It is not a de Polignac number, because 21023301037 - 2²⁷ = 20889083309 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 21023300999 and 21023301017.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21023301007) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10511650518 + 10511650519.

It is an arithmetic number, because the mean of its divisors is an integer number (10511650519).

Almost surely, 2^21023301037 is an apocalyptic number.

It is an amenable number.

21023301037 is a deficient number, since it is larger than the sum of its proper divisors (1).

21023301037 is an equidigital number, since it uses as much as digits as its factorization.

21023301037 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 22.

Adding to 21023301037 its reverse (73010332012), we get a palindrome (94033633049).

The spelling of 21023301037 in words is "twenty-one billion, twenty-three million, three hundred one thousand, thirty-seven".