21126022 has 8 divisors (see below), whose sum is σ = 32090400. Its totient is φ = 10429224.

The previous prime is 21126013. The next prime is 21126023. The reversal of 21126022 is 22062112.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 21125987 and 21126005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21126023) 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 3 ways as a sum of consecutive naturals, for example, 66697 + ... + 67012.

It is an arithmetic number, because the mean of its divisors is an integer number (4011300).

Almost surely, 2^21126022 is an apocalyptic number.

21126022 is a deficient number, since it is larger than the sum of its proper divisors (10964378).

21126022 is a wasteful number, since it uses less digits than its factorization.

21126022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 133790.

The product of its (nonzero) digits is 96, while the sum is 16.

The square root of 21126022 is about 4596.3052553111. The cubic root of 21126022 is about 276.4431985275.

Adding to 21126022 its reverse (22062112), we get a palindrome (43188134).

It can be divided in two parts, 21 and 126022, that multiplied together give a palindrome (2646462).

The spelling of 21126022 in words is "twenty-one million, one hundred twenty-six thousand, twenty-two".