21114722 has 8 divisors (see below), whose sum is σ = 31742172. Its totient is φ = 10534000.

The previous prime is 21114721. The next prime is 21114727. The reversal of 21114722 is 22741112.

It can be written as a sum of positive squares in 2 ways, for example, as 19971961 + 1142761 = 4469^2 + 1069^2 .

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 = 21114694 and 21114703.

It is not an unprimeable number, because it can be changed into a prime (21114721) 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, 10529 + ... + 12372.

Almost surely, 2^21114722 is an apocalyptic number.

21114722 is a deficient number, since it is larger than the sum of its proper divisors (10627450).

21114722 is a wasteful number, since it uses less digits than its factorization.

21114722 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23364.

The product of its digits is 224, while the sum is 20.

The square root of 21114722 is about 4595.0758426820. The cubic root of 21114722 is about 276.3939012633.

Adding to 21114722 its reverse (22741112), we get a palindrome (43855834).

The spelling of 21114722 in words is "twenty-one million, one hundred fourteen thousand, seven hundred twenty-two".