22215265622550 has 2880 divisors, whose sum is σ = 88988594365440. Its totient is φ = 3987072460800.

The previous prime is 22215265622533. The next prime is 22215265622567. The reversal of 22215265622550 is 5522656251222.

22215265622550 is a `hidden beast` number, since 2 + 2 + 2 + 1 + 5 + 26 + 56 + 22 + 550 = 666.

It is an interprime number because it is at equal distance from previous prime (22215265622533) and next prime (22215265622567).

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a junction number, because it is equal to n+sod(n) for n = 22215265622496 and 22215265622505.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 1439 ways as a sum of consecutive naturals, for example, 133025542567 + ... + 133025542733.

It is an arithmetic number, because the mean of its divisors is an integer number (30898817488).

Almost surely, 2^{22215265622550} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22215265622550, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (44494297182720).

22215265622550 is an abundant number, since it is smaller than the sum of its proper divisors (66773328742890).

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

22215265622550 is a wasteful number, since it uses less digits than its factorization.

22215265622550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 409 (or 384 counting only the distinct ones).

The product of its (nonzero) digits is 1440000, while the sum is 45.

The spelling of 22215265622550 in words is "twenty-two trillion, two hundred fifteen billion, two hundred sixty-five million, six hundred twenty-two thousand, five hundred fifty".