21113262 has 12 divisors (see below), whose sum is σ = 45745440. Its totient is φ = 7037748.

The previous prime is 21113251. The next prime is 21113297. The reversal of 21113262 is 26231112.

It is a Harshad number since it is a multiple of its sum of digits (18), and also a Moran number because the ratio is a prime number: 1172959 = 21113262 / (2 + 1 + 1 + 1 + 3 + 2 + 6 + 2).

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 586462 + ... + 586497.

It is an arithmetic number, because the mean of its divisors is an integer number (3812120).

Almost surely, 2^21113262 is an apocalyptic number.

21113262 is an abundant number, since it is smaller than the sum of its proper divisors (24632178).

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

21113262 is a wasteful number, since it uses less digits than its factorization.

21113262 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1172967 (or 1172964 counting only the distinct ones).

The product of its digits is 144, while the sum is 18.

The square root of 21113262 is about 4594.9169742227. The cubic root of 21113262 is about 276.3875305993.

Adding to 21113262 its reverse (26231112), we get a palindrome (47344374).

The spelling of 21113262 in words is "twenty-one million, one hundred thirteen thousand, two hundred sixty-two".