26221013 has 16 divisors (see below), whose sum is σ = 33027456. Its totient is φ = 20260800.

The previous prime is 26221003. The next prime is 26221037. The reversal of 26221013 is 31012262.

It is not a de Polignac number, because 26221013 - 2⁸ = 26220757 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 26220982 and 26221000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26221003) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 563 + ... + 7263.

It is an arithmetic number, because the mean of its divisors is an integer number (2064216).

Almost surely, 2^26221013 is an apocalyptic number.

It is an amenable number.

26221013 is a deficient number, since it is larger than the sum of its proper divisors (6806443).

26221013 is a wasteful number, since it uses less digits than its factorization.

26221013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6764.

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 26221013 is about 5120.6457600580. The cubic root of 26221013 is about 297.0866627651.

Adding to 26221013 its reverse (31012262), we get a palindrome (57233275).

The spelling of 26221013 in words is "twenty-six million, two hundred twenty-one thousand, thirteen".