22016421505412 has 12 divisors (see below), whose sum is σ = 38528879502876. Its totient is φ = 11008170218880.

The previous prime is 22016421505409. The next prime is 22016421505511. The reversal of 22016421505412 is 21450512461022.

It can be written as a sum of positive squares in 2 ways, for example, as 7182646562116 + 14833774943296 = 2680046^2 + 3851464^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8894513 + ... + 11097080.

It is an arithmetic number, because the mean of its divisors is an integer number (3210739958573).

Almost surely, 2^{22016421505412} is an apocalyptic number.

It is an amenable number.

22016421505412 is a deficient number, since it is larger than the sum of its proper divisors (16512457997464).

22016421505412 is a wasteful number, since it uses less digits than its factorization.

22016421505412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20266918 (or 20266916 counting only the distinct ones).

The product of its (nonzero) digits is 38400, while the sum is 35.

Adding to 22016421505412 its reverse (21450512461022), we get a palindrome (43466933966434).

The spelling of 22016421505412 in words is "twenty-two trillion, sixteen billion, four hundred twenty-one million, five hundred five thousand, four hundred twelve".