21122037246 has 16 divisors (see below), whose sum is σ = 42255417600. Its totient is φ = 7038788568.

The previous prime is 21122037241. The next prime is 21122037247. The reversal of 21122037246 is 64273022112.

It is a super-2 number, since 2×21122037246² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21122037241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 448326 + ... + 493193.

It is an arithmetic number, because the mean of its divisors is an integer number (2640963600).

Almost surely, 2^21122037246 is an apocalyptic number.

21122037246 is an abundant number, since it is smaller than the sum of its proper divisors (21133380354).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21122037246 is a wasteful number, since it uses less digits than its factorization.

21122037246 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 945263.

The product of its (nonzero) digits is 8064, while the sum is 30.

Adding to 21122037246 its reverse (64273022112), we get a palindrome (85395059358).

The spelling of 21122037246 in words is "twenty-one billion, one hundred twenty-two million, thirty-seven thousand, two hundred forty-six".