22001311420 has 36 divisors (see below), whose sum is σ = 50784850872. Its totient is φ = 8000476000.

The previous prime is 22001311417. The next prime is 22001311433. The reversal of 22001311420 is 2411310022.

It is a junction number, because it is equal to n+sod(n) for n = 22001311394 and 22001311403.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4543306 + ... + 4548145.

It is an arithmetic number, because the mean of its divisors is an integer number (1410690302).

Almost surely, 2^22001311420 is an apocalyptic number.

22001311420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22001311420 is an abundant number, since it is smaller than the sum of its proper divisors (28783539452).

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

22001311420 is a wasteful number, since it uses less digits than its factorization.

22001311420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9091482 (or 9091469 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 16.

Adding to 22001311420 its reverse (2411310022), we get a palindrome (24412621442).

The spelling of 22001311420 in words is "twenty-two billion, one million, three hundred eleven thousand, four hundred twenty".