21220330034 has 8 divisors (see below), whose sum is σ = 31888687728. Its totient is φ = 10590767460.

The previous prime is 21220330013. The next prime is 21220330057. The reversal of 21220330034 is 43003302212.

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 = 21220329988 and 21220330015.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9697412 + ... + 9699599.

It is an arithmetic number, because the mean of its divisors is an integer number (3986085966).

Almost surely, 2^21220330034 is an apocalyptic number.

21220330034 is a deficient number, since it is larger than the sum of its proper divisors (10668357694).

21220330034 is a wasteful number, since it uses less digits than its factorization.

21220330034 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19397560.

The product of its (nonzero) digits is 864, while the sum is 20.

Adding to 21220330034 its reverse (43003302212), we get a palindrome (64223632246).

The spelling of 21220330034 in words is "twenty-one billion, two hundred twenty million, three hundred thirty thousand, thirty-four".