2221210442 has 16 divisors (see below), whose sum is σ = 3663332352. Its totient is φ = 1001689920.

The previous prime is 2221210403. The next prime is 2221210457. The reversal of 2221210442 is 2440121222.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 394703 + ... + 400290.

It is an arithmetic number, because the mean of its divisors is an integer number (228958272).

Almost surely, 2^2221210442 is an apocalyptic number.

2221210442 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

2221210442 is a deficient number, since it is larger than the sum of its proper divisors (1442121910).

2221210442 is a wasteful number, since it uses less digits than its factorization.

2221210442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 795133.

The product of its (nonzero) digits is 512, while the sum is 20.

The square root of 2221210442 is about 47129.7193074603. The cubic root of 2221210442 is about 1304.7578010421.

Adding to 2221210442 its reverse (2440121222), we get a palindrome (4661331664).

The spelling of 2221210442 in words is "two billion, two hundred twenty-one million, two hundred ten thousand, four hundred forty-two".