22022251653450 has 192 divisors, whose sum is σ = 59885667429120. Its totient is φ = 5330873856000.

The previous prime is 22022251653379. The next prime is 22022251653503. The reversal of 22022251653450 is 5435615222022.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 22022251653399 and 22022251653408.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 69428715 + ... + 69745185.

It is an arithmetic number, because the mean of its divisors is an integer number (311904517860).

Almost surely, 2^{22022251653450} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22022251653450, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29942833714560).

22022251653450 is an abundant number, since it is smaller than the sum of its proper divisors (37863415775670).

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

22022251653450 is a wasteful number, since it uses less digits than its factorization.

22022251653450 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 317473 (or 317468 counting only the distinct ones).

The product of its (nonzero) digits is 288000, while the sum is 39.

Adding to 22022251653450 its reverse (5435615222022), we get a palindrome (27457866875472).

The spelling of 22022251653450 in words is "twenty-two trillion, twenty-two billion, two hundred fifty-one million, six hundred fifty-three thousand, four hundred fifty".