22001214004 has 96 divisors (see below), whose sum is σ = 48489799680. Its totient is φ = 8485344000.

The previous prime is 22001213987. The next prime is 22001214007. The reversal of 22001214004 is 40041210022.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22001214007) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 17067792 + ... + 17069080.

It is an arithmetic number, because the mean of its divisors is an integer number (505102080).

Almost surely, 2^22001214004 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22001214004, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24244899840).

22001214004 is an abundant number, since it is smaller than the sum of its proper divisors (26488585676).

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

22001214004 is a wasteful number, since it uses less digits than its factorization.

22001214004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1829 (or 1827 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 16.

Adding to 22001214004 its reverse (40041210022), we get a palindrome (62042424026).

The spelling of 22001214004 in words is "twenty-two billion, one million, two hundred fourteen thousand, four".