22606215220 has 12 divisors (see below), whose sum is σ = 47473052004. Its totient is φ = 9042486080.

The previous prime is 22606215211. The next prime is 22606215221. The reversal of 22606215220 is 2251260622.

It can be written as a sum of positive squares in 2 ways, for example, as 16919245476 + 5686969744 = 130074^2 + 75412^2 .

It is a super-2 number, since 2×22606215220² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22606215221) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 565155361 + ... + 565155400.

It is an arithmetic number, because the mean of its divisors is an integer number (3956087667).

Almost surely, 2^22606215220 is an apocalyptic number.

22606215220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22606215220 is an abundant number, since it is smaller than the sum of its proper divisors (24866836784).

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

22606215220 is a wasteful number, since it uses less digits than its factorization.

22606215220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1130310770 (or 1130310768 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 28.

Adding to 22606215220 its reverse (2251260622), we get a palindrome (24857475842).

The spelling of 22606215220 in words is "twenty-two billion, six hundred six million, two hundred fifteen thousand, two hundred twenty".