21244122030 has 16 divisors (see below), whose sum is σ = 50985892944. Its totient is φ = 5665099200.

The previous prime is 21244122001. The next prime is 21244122043. The reversal of 21244122030 is 3022144212.

It is a junction number, because it is equal to n+sod(n) for n = 21244121988 and 21244122006.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 354068671 + ... + 354068730.

It is an arithmetic number, because the mean of its divisors is an integer number (3186618309).

Almost surely, 2^21244122030 is an apocalyptic number.

21244122030 is an abundant number, since it is smaller than the sum of its proper divisors (29741770914).

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

21244122030 is a wasteful number, since it uses less digits than its factorization.

21244122030 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 708137411.

The product of its (nonzero) digits is 768, while the sum is 21.

Adding to 21244122030 its reverse (3022144212), we get a palindrome (24266266242).

The spelling of 21244122030 in words is "twenty-one billion, two hundred forty-four million, one hundred twenty-two thousand, thirty".