21110126 has 16 divisors (see below), whose sum is σ = 32147280. Its totient is φ = 10395840.

The previous prime is 21110123. The next prime is 21110129. The reversal of 21110126 is 62101112.

It is an interprime number because it is at equal distance from previous prime (21110123) and next prime (21110129).

It is a self number, because there is not a number n which added to its sum of digits gives 21110126.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21110123) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 51410 + ... + 51818.

It is an arithmetic number, because the mean of its divisors is an integer number (2009205).

Almost surely, 2^21110126 is an apocalyptic number.

21110126 is a deficient number, since it is larger than the sum of its proper divisors (11037154).

21110126 is a wasteful number, since it uses less digits than its factorization.

21110126 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 739.

The product of its (nonzero) digits is 24, while the sum is 14.

The square root of 21110126 is about 4594.5757149056. The cubic root of 21110126 is about 276.3738457691.

Adding to 21110126 its reverse (62101112), we get a palindrome (83211238).

The spelling of 21110126 in words is "twenty-one million, one hundred ten thousand, one hundred twenty-six".