2221611354 has 64 divisors (see below), whose sum is σ = 5182894080. Its totient is φ = 704032560.

The previous prime is 2221611349. The next prime is 2221611367. The reversal of 2221611354 is 4531161222.

2221611354 is a `hidden beast` number, since 22 + 21 + 611 + 3 + 5 + 4 = 666.

It is a super-3 number, since 3×2221611354³ (a number of 29 digits) contains 333 as substring.

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

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, 202059 + ... + 212769.

It is an arithmetic number, because the mean of its divisors is an integer number (80982720).

Almost surely, 2^2221611354 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2221611354, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2591447040).

2221611354 is an abundant number, since it is smaller than the sum of its proper divisors (2961282726).

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

2221611354 is a wasteful number, since it uses less digits than its factorization.

2221611354 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10912 (or 10906 counting only the distinct ones).

The product of its digits is 2880, while the sum is 27.

The square root of 2221611354 is about 47133.9723978364. The cubic root of 2221611354 is about 1304.8362960196.

Adding to 2221611354 its reverse (4531161222), we get a palindrome (6752772576).

The spelling of 2221611354 in words is "two billion, two hundred twenty-one million, six hundred eleven thousand, three hundred fifty-four".