26521200222 has 64 divisors (see below), whose sum is σ = 59339105280. Its totient is φ = 7832332800.

The previous prime is 26521200221. The next prime is 26521200283. The reversal of 26521200222 is 22200212562.

It is a happy number.

It is a super-2 number, since 2×26521200222² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 26521200192 and 26521200201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26521200221) 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, 2806818 + ... + 2816250.

It is an arithmetic number, because the mean of its divisors is an integer number (927173520).

Almost surely, 2^26521200222 is an apocalyptic number.

26521200222 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 26521200222, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29669552640).

26521200222 is an abundant number, since it is smaller than the sum of its proper divisors (32817905058).

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

26521200222 is a wasteful number, since it uses less digits than its factorization.

26521200222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10529.

The product of its (nonzero) digits is 1920, while the sum is 24.

Adding to 26521200222 its reverse (22200212562), we get a palindrome (48721412784).

The spelling of 26521200222 in words is "twenty-six billion, five hundred twenty-one million, two hundred thousand, two hundred twenty-two".