22221554013450 has 72 divisors (see below), whose sum is σ = 65129354686656. Its totient is φ = 5387043396000.

The previous prime is 22221554013437. The next prime is 22221554013473. The reversal of 22221554013450 is 5431045512222.

22221554013450 is a `hidden beast` number, since 2 + 2 + 2 + 2 + 155 + 40 + 13 + 450 = 666.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 2244596466 + ... + 2244606365.

It is an arithmetic number, because the mean of its divisors is an integer number (904574370648).

Almost surely, 2^{22221554013450} is an apocalyptic number.

22221554013450 is an abundant number, since it is smaller than the sum of its proper divisors (42907800673206).

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

22221554013450 is a wasteful number, since it uses less digits than its factorization.

22221554013450 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4489202860 (or 4489202852 counting only the distinct ones).

The product of its (nonzero) digits is 96000, while the sum is 36.

Adding to 22221554013450 its reverse (5431045512222), we get a palindrome (27652599525672).

The spelling of 22221554013450 in words is "twenty-two trillion, two hundred twenty-one billion, five hundred fifty-four million, thirteen thousand, four hundred fifty".