21424226630 has 16 divisors (see below), whose sum is σ = 39195799344. Its totient is φ = 8429203680.

The previous prime is 21424226617. The next prime is 21424226651. The reversal of 21424226630 is 3662242412.

It is a happy number.

It is a Curzon 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, 17560232 + ... + 17561451.

It is an arithmetic number, because the mean of its divisors is an integer number (2449737459).

Almost surely, 2^21424226630 is an apocalyptic number.

21424226630 is a deficient number, since it is larger than the sum of its proper divisors (17771572714).

21424226630 is a wasteful number, since it uses less digits than its factorization.

21424226630 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35121751.

The product of its (nonzero) digits is 27648, while the sum is 32.

The spelling of 21424226630 in words is "twenty-one billion, four hundred twenty-four million, two hundred twenty-six thousand, six hundred thirty".