21422316037 has 16 divisors (see below), whose sum is σ = 22355570160. Its totient is φ = 20502816768.

The previous prime is 21422315983. The next prime is 21422316067. The reversal of 21422316037 is 73061322412.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 4397546596 + 17024769441 = 66314^2 + 130479^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-21422316037 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21422316067) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1575733 + ... + 1589269.

It is an arithmetic number, because the mean of its divisors is an integer number (1397223135).

Almost surely, 2^21422316037 is an apocalyptic number.

It is an amenable number.

21422316037 is a deficient number, since it is larger than the sum of its proper divisors (933254123).

21422316037 is a wasteful number, since it uses less digits than its factorization.

21422316037 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14040.

The product of its (nonzero) digits is 12096, while the sum is 31.

Adding to 21422316037 its reverse (73061322412), we get a palindrome (94483638449).

The spelling of 21422316037 in words is "twenty-one billion, four hundred twenty-two million, three hundred sixteen thousand, thirty-seven".