22116311520 has 48 divisors (see below), whose sum is σ = 69666382800. Its totient is φ = 5897682944.

The previous prime is 22116311519. The next prime is 22116311521. The reversal of 22116311520 is 2511361122.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (22116311519) and next prime (22116311521).

It is a tau number, because it is divible by the number of its divisors (48).

It is a super-3 number, since 3×22116311520³ (a number of 32 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22116311521) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23037345 + ... + 23038304.

It is an arithmetic number, because the mean of its divisors is an integer number (1451382975).

Almost surely, 2^22116311520 is an apocalyptic number.

22116311520 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22116311520 is an abundant number, since it is smaller than the sum of its proper divisors (47550071280).

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

22116311520 is a wasteful number, since it uses less digits than its factorization.

22116311520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46075667 (or 46075659 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 24.

Adding to 22116311520 its reverse (2511361122), we get a palindrome (24627672642).

The spelling of 22116311520 in words is "twenty-two billion, one hundred sixteen million, three hundred eleven thousand, five hundred twenty".