21134322 has 24 divisors (see below), whose sum is σ = 49954320. Its totient is φ = 6404280.

The previous prime is 21134293. The next prime is 21134353. The reversal of 21134322 is 22343112.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 21134295 and 21134304.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 53172 + ... + 53567.

It is an arithmetic number, because the mean of its divisors is an integer number (2081430).

Almost surely, 2^21134322 is an apocalyptic number.

21134322 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

21134322 is an abundant number, since it is smaller than the sum of its proper divisors (28819998).

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

21134322 is a wasteful number, since it uses less digits than its factorization.

21134322 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106758 (or 106755 counting only the distinct ones).

The product of its digits is 288, while the sum is 18.

The square root of 21134322 is about 4597.2080657721. The cubic root of 21134322 is about 276.4793968257.

Adding to 21134322 its reverse (22343112), we get a palindrome (43477434).

The spelling of 21134322 in words is "twenty-one million, one hundred thirty-four thousand, three hundred twenty-two".