2221526436 has 24 divisors (see below), whose sum is σ = 5456381280. Its totient is φ = 701534592.

The previous prime is 2221526431. The next prime is 2221526443. The reversal of 2221526436 is 6346251222.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 2221526397 and 2221526406.

It is not an unprimeable number, because it can be changed into a prime (2221526431) 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, 4871541 + ... + 4871996.

It is an arithmetic number, because the mean of its divisors is an integer number (227349220).

Almost surely, 2^2221526436 is an apocalyptic number.

It is an amenable number.

2221526436 is an abundant number, since it is smaller than the sum of its proper divisors (3234854844).

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

2221526436 is a wasteful number, since it uses less digits than its factorization.

2221526436 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9743563 (or 9743561 counting only the distinct ones).

The product of its digits is 34560, while the sum is 33.

The square root of 2221526436 is about 47133.0715740020. The cubic root of 2221526436 is about 1304.8196706244.

Adding to 2221526436 its reverse (6346251222), we get a palindrome (8567777658).

The spelling of 2221526436 in words is "two billion, two hundred twenty-one million, five hundred twenty-six thousand, four hundred thirty-six".