22445222420550 has 24 divisors (see below), whose sum is σ = 55664151603336. Its totient is φ = 5985392645440.

The previous prime is 22445222420507. The next prime is 22445222420557. The reversal of 22445222420550 is 5502422254422.

It is a junction number, because it is equal to n+sod(n) for n = 22445222420499 and 22445222420508.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22445222420557) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 74817407919 + ... + 74817408218.

It is an arithmetic number, because the mean of its divisors is an integer number (2319339650139).

Almost surely, 2^{22445222420550} is an apocalyptic number.

22445222420550 is an abundant number, since it is smaller than the sum of its proper divisors (33218929182786).

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

22445222420550 is a wasteful number, since it uses less digits than its factorization.

22445222420550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 149634816152 (or 149634816147 counting only the distinct ones).

The product of its (nonzero) digits is 512000, while the sum is 39.

Adding to 22445222420550 its reverse (5502422254422), we get a palindrome (27947644674972).

The spelling of 22445222420550 in words is "twenty-two trillion, four hundred forty-five billion, two hundred twenty-two million, four hundred twenty thousand, five hundred fifty".