2221354542 has 48 divisors (see below), whose sum is σ = 4892186880. Its totient is φ = 671914320.

The previous prime is 2221354523. The next prime is 2221354549. The reversal of 2221354542 is 2454531222.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2221354549) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 446923 + ... + 451865.

It is an arithmetic number, because the mean of its divisors is an integer number (101920560).

Almost surely, 2^2221354542 is an apocalyptic number.

2221354542 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 2221354542, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2446093440).

2221354542 is an abundant number, since it is smaller than the sum of its proper divisors (2670832338).

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

2221354542 is a wasteful number, since it uses less digits than its factorization.

2221354542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5589 (or 5578 counting only the distinct ones).

The product of its digits is 19200, while the sum is 30.

The square root of 2221354542 is about 47131.2480420368. The cubic root of 2221354542 is about 1304.7860156182.

Adding to 2221354542 its reverse (2454531222), we get a palindrome (4675885764).

The spelling of 2221354542 in words is "two billion, two hundred twenty-one million, three hundred fifty-four thousand, five hundred forty-two".