2221054452 has 96 divisors (see below), whose sum is σ = 5851440000. Its totient is φ = 728462592.

The previous prime is 2221054441. The next prime is 2221054499. The reversal of 2221054452 is 2544501222.

2221054452 is a `hidden beast` number, since 2 + 2 + 210 + 5 + 445 + 2 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2585199 + ... + 2586057.

It is an arithmetic number, because the mean of its divisors is an integer number (60952500).

Almost surely, 2^2221054452 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2221054452, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2925720000).

2221054452 is an abundant number, since it is smaller than the sum of its proper divisors (3630385548).

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

2221054452 is a wasteful number, since it uses less digits than its factorization.

2221054452 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1230 (or 1222 counting only the distinct ones).

The product of its (nonzero) digits is 6400, while the sum is 27.

The square root of 2221054452 is about 47128.0643778206. The cubic root of 2221054452 is about 1304.7272570452.

Adding to 2221054452 its reverse (2544501222), we get a palindrome (4765555674).

The spelling of 2221054452 in words is "two billion, two hundred twenty-one million, fifty-four thousand, four hundred fifty-two".