21222464030 has 16 divisors (see below), whose sum is σ = 38235405024. Its totient is φ = 8481214560.

The previous prime is 21222463981. The next prime is 21222464051. The reversal of 21222464030 is 3046422212.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 959906 + ... + 981765.

It is an arithmetic number, because the mean of its divisors is an integer number (2389712814).

Almost surely, 2^21222464030 is an apocalyptic number.

21222464030 is a deficient number, since it is larger than the sum of its proper divisors (17012940994).

21222464030 is a wasteful number, since it uses less digits than its factorization.

21222464030 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1942771.

The product of its (nonzero) digits is 4608, while the sum is 26.

Adding to 21222464030 its reverse (3046422212), we get a palindrome (24268886242).

The spelling of 21222464030 in words is "twenty-one billion, two hundred twenty-two million, four hundred sixty-four thousand, thirty".