22001010312 has 64 divisors (see below), whose sum is σ = 57018816000. Its totient is φ = 7065895424.

The previous prime is 22001010277. The next prime is 22001010323. The reversal of 22001010312 is 21301010022.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 300388 + ... + 366380.

It is an arithmetic number, because the mean of its divisors is an integer number (890919000).

Almost surely, 2^22001010312 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 22001010312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28509408000).

22001010312 is an abundant number, since it is smaller than the sum of its proper divisors (35017805688).

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

22001010312 is a wasteful number, since it uses less digits than its factorization.

22001010312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66510 (or 66506 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 12.

Adding to 22001010312 its reverse (21301010022), we get a palindrome (43302020334).

The spelling of 22001010312 in words is "twenty-two billion, one million, ten thousand, three hundred twelve".