21043200122 has 8 divisors (see below), whose sum is σ = 36074057376. Its totient is φ = 9018514332.

The previous prime is 21043200109. The next prime is 21043200149. The reversal of 21043200122 is 22100234012.

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

It is a self number, because there is not a number n which added to its sum of digits gives 21043200122.

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, 751542848 + ... + 751542875.

It is an arithmetic number, because the mean of its divisors is an integer number (4509257172).

Almost surely, 2^21043200122 is an apocalyptic number.

21043200122 is a deficient number, since it is larger than the sum of its proper divisors (15030857254).

21043200122 is a wasteful number, since it uses less digits than its factorization.

21043200122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1503085732.

The product of its (nonzero) digits is 192, while the sum is 17.

Adding to 21043200122 its reverse (22100234012), we get a palindrome (43143434134).

The spelling of 21043200122 in words is "twenty-one billion, forty-three million, two hundred thousand, one hundred twenty-two".