2221927621 has 8 divisors (see below), whose sum is σ = 2339344800. Its totient is φ = 2104557840.

The previous prime is 2221927619. The next prime is 2221927657. The reversal of 2221927621 is 1267291222.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2221927621 - 2¹ = 2221927619 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2221927601) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 125031 + ... + 141691.

It is an arithmetic number, because the mean of its divisors is an integer number (292418100).

Almost surely, 2^2221927621 is an apocalyptic number.

It is an amenable number.

2221927621 is a deficient number, since it is larger than the sum of its proper divisors (117417179).

2221927621 is a wasteful number, since it uses less digits than its factorization.

2221927621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23699.

The product of its digits is 12096, while the sum is 34.

The square root of 2221927621 is about 47137.3272577052. The cubic root of 2221927621 is about 1304.8982116016.

The spelling of 2221927621 in words is "two billion, two hundred twenty-one million, nine hundred twenty-seven thousand, six hundred twenty-one".