21122320030 has 16 divisors (see below), whose sum is σ = 43451629920. Its totient is φ = 7241938272.

The previous prime is 21122319983. The next prime is 21122320039. The reversal of 21122320030 is 3002322112.

It is a junction number, because it is equal to n+sod(n) for n = 21122319986 and 21122320013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21122320039) 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, 150873645 + ... + 150873784.

It is an arithmetic number, because the mean of its divisors is an integer number (2715726870).

Almost surely, 2^21122320030 is an apocalyptic number.

21122320030 is an abundant number, since it is smaller than the sum of its proper divisors (22329309890).

21122320030 is a wasteful number, since it uses less digits than its factorization.

21122320030 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 301747443.

The product of its (nonzero) digits is 144, while the sum is 16.

Adding to 21122320030 its reverse (3002322112), we get a palindrome (24124642142).

The spelling of 21122320030 in words is "twenty-one billion, one hundred twenty-two million, three hundred twenty thousand, thirty".