21034022 has 4 divisors (see below), whose sum is σ = 31551036. Its totient is φ = 10517010.

The previous prime is 21034003. The next prime is 21034033. The reversal of 21034022 is 22043012.

It is a semiprime because it is the product of two primes.

It is a junction number, because it is equal to n+sod(n) for n = 21033988 and 21034006.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5258504 + ... + 5258507.

It is an arithmetic number, because the mean of its divisors is an integer number (7887759).

Almost surely, 2^21034022 is an apocalyptic number.

21034022 is a deficient number, since it is larger than the sum of its proper divisors (10517014).

21034022 is a wasteful number, since it uses less digits than its factorization.

21034022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10517013.

The product of its (nonzero) digits is 96, while the sum is 14.

The square root of 21034022 is about 4586.2862972126. The cubic root of 21034022 is about 276.0413279148.

Adding to 21034022 its reverse (22043012), we get a palindrome (43077034).

The spelling of 21034022 in words is "twenty-one million, thirty-four thousand, twenty-two".