21221324034 has 8 divisors (see below), whose sum is σ = 42442648080. Its totient is φ = 7073774676.

The previous prime is 21221324021. The next prime is 21221324041. The reversal of 21221324034 is 43042312212.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

21221324034 is an admirable number.

It is a junction number, because it is equal to n+sod(n) for n = 21221323995 and 21221324013.

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, 1768443664 + ... + 1768443675.

It is an arithmetic number, because the mean of its divisors is an integer number (5305331010).

Almost surely, 2^21221324034 is an apocalyptic number.

21221324034 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21221324034 is a wasteful number, since it uses less digits than its factorization.

21221324034 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3536887344.

The product of its (nonzero) digits is 2304, while the sum is 24.

Adding to 21221324034 its reverse (43042312212), we get a palindrome (64263636246).

The spelling of 21221324034 in words is "twenty-one billion, two hundred twenty-one million, three hundred twenty-four thousand, thirty-four".