52221116204040 has 256 divisors, whose sum is σ = 181621440000000. Its totient is φ = 11765637411840.

The previous prime is 52221116203981. The next prime is 52221116204041. The reversal of 52221116204040 is 4040261112225.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 52221116203989 and 52221116204007.

It is not an unprimeable number, because it can be changed into a prime (52221116204041) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 14803461 + ... + 17988459.

It is an arithmetic number, because the mean of its divisors is an integer number (709458750000).

Almost surely, 2^{52221116204040} 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 52221116204040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (90810720000000).

52221116204040 is an abundant number, since it is smaller than the sum of its proper divisors (129400323795960).

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

52221116204040 is a wasteful number, since it uses less digits than its factorization.

52221116204040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3185300 (or 3185296 counting only the distinct ones).

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

Adding to 52221116204040 its reverse (4040261112225), we get a palindrome (56261377316265).

The spelling of 52221116204040 in words is "fifty-two trillion, two hundred twenty-one billion, one hundred sixteen million, two hundred four thousand, forty".