21022030030 has 32 divisors (see below), whose sum is σ = 38418494400. Its totient is φ = 8280464640.

The previous prime is 21022030013. The next prime is 21022030063. The reversal of 21022030030 is 3003022012.

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 15 ways as a sum of consecutive naturals, for example, 591196 + ... + 625744.

It is an arithmetic number, because the mean of its divisors is an integer number (1200577950).

Almost surely, 2^21022030030 is an apocalyptic number.

21022030030 is a deficient number, since it is larger than the sum of its proper divisors (17396464370).

21022030030 is a wasteful number, since it uses less digits than its factorization.

21022030030 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35484.

The product of its (nonzero) digits is 72, while the sum is 13.

Adding to 21022030030 its reverse (3003022012), we get a palindrome (24025052042).

The spelling of 21022030030 in words is "twenty-one billion, twenty-two million, thirty thousand, thirty".