21052200244116 has 96 divisors (see below), whose sum is σ = 53960852736000. Its totient is φ = 6358362088320.

The previous prime is 21052200244099. The next prime is 21052200244121. The reversal of 21052200244116 is 61144200225012.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 51970801 + ... + 52374311.

It is an arithmetic number, because the mean of its divisors is an integer number (562092216000).

Almost surely, 2^{21052200244116} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 21052200244116, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26980426368000).

21052200244116 is an abundant number, since it is smaller than the sum of its proper divisors (32908652491884).

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

21052200244116 is a wasteful number, since it uses less digits than its factorization.

21052200244116 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 413509 (or 413507 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 30.

Adding to 21052200244116 its reverse (61144200225012), we get a palindrome (82196400469128).

The spelling of 21052200244116 in words is "twenty-one trillion, fifty-two billion, two hundred million, two hundred forty-four thousand, one hundred sixteen".