21442300030 has 16 divisors (see below), whose sum is σ = 38610088560. Its totient is φ = 8573820352.

The previous prime is 21442300021. The next prime is 21442300031. The reversal of 21442300030 is 3000324412.

It is a junction number, because it is equal to n+sod(n) for n = 21442299980 and 21442300007.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21442300031) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 358300 + ... + 413839.

It is an arithmetic number, because the mean of its divisors is an integer number (2413130535).

Almost surely, 2^21442300030 is an apocalyptic number.

21442300030 is a deficient number, since it is larger than the sum of its proper divisors (17167788530).

21442300030 is a wasteful number, since it uses less digits than its factorization.

21442300030 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 774923.

The product of its (nonzero) digits is 576, while the sum is 19.

Adding to 21442300030 its reverse (3000324412), we get a palindrome (24442624442).

The spelling of 21442300030 in words is "twenty-one billion, four hundred forty-two million, three hundred thousand, thirty".