55332221502000 has 640 divisors, whose sum is σ = 191372525660160. Its totient is φ = 13726676275200.

The previous prime is 55332221501957. The next prime is 55332221502079. The reversal of 55332221502000 is 20512223355.

It is a super-2 number, since 2×55332221502000² (a number of 28 digits) contains 22 as substring.

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

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 663072279 + ... + 663155721.

It is an arithmetic number, because the mean of its divisors is an integer number (299019571344).

Almost surely, 2^{55332221502000} is an apocalyptic number.

55332221502000 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 55332221502000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (95686262830080).

55332221502000 is an abundant number, since it is smaller than the sum of its proper divisors (136040304158160).

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

55332221502000 is a wasteful number, since it uses less digits than its factorization.

55332221502000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83638 (or 83622 counting only the distinct ones).

The product of its (nonzero) digits is 18000, while the sum is 30.

Adding to 55332221502000 its reverse (20512223355), we get a palindrome (55352733725355).

The spelling of 55332221502000 in words is "fifty-five trillion, three hundred thirty-two billion, two hundred twenty-one million, five hundred two thousand".