21140022 has 8 divisors (see below), whose sum is σ = 42280056. Its totient is φ = 7046672.

The previous prime is 21140011. The next prime is 21140033. The reversal of 21140022 is 22004112.

It is an interprime number because it is at equal distance from previous prime (21140011) and next prime (21140033).

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

21140022 is an admirable number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1761663 + ... + 1761674.

It is an arithmetic number, because the mean of its divisors is an integer number (5285007).

Almost surely, 2^21140022 is an apocalyptic number.

21140022 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

21140022 is a wasteful number, since it uses less digits than its factorization.

21140022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3523342.

The product of its (nonzero) digits is 32, while the sum is 12.

The square root of 21140022 is about 4597.8279654637. The cubic root of 21140022 is about 276.5042504091.

Adding to 21140022 its reverse (22004112), we get a palindrome (43144134).

The spelling of 21140022 in words is "twenty-one million, one hundred forty thousand, twenty-two".