21120844126 has 8 divisors (see below), whose sum is σ = 31698650304. Its totient is φ = 10554627360.

The previous prime is 21120844097. The next prime is 21120844219. The reversal of 21120844126 is 62144802112.

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

It is a congruent number.

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, 2892795 + ... + 2900086.

It is an arithmetic number, because the mean of its divisors is an integer number (3962331288).

Almost surely, 2^21120844126 is an apocalyptic number.

21120844126 is a deficient number, since it is larger than the sum of its proper divisors (10577806178).

21120844126 is a wasteful number, since it uses less digits than its factorization.

21120844126 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5794706.

The product of its (nonzero) digits is 6144, while the sum is 31.

The spelling of 21120844126 in words is "twenty-one billion, one hundred twenty million, eight hundred forty-four thousand, one hundred twenty-six".