4221321121 has 8 divisors (see below), whose sum is σ = 4313764224. Its totient is φ = 4128987600.

The previous prime is 4221321109. The next prime is 4221321127. The reversal of 4221321121 is 1211231224.

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

It is not a de Polignac number, because 4221321121 - 2¹³ = 4221312929 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4221321127) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 53046 + ... + 106096.

It is an arithmetic number, because the mean of its divisors is an integer number (539220528).

Almost surely, 2^4221321121 is an apocalyptic number.

It is an amenable number.

4221321121 is a deficient number, since it is larger than the sum of its proper divisors (92443103).

4221321121 is a wasteful number, since it uses less digits than its factorization.

4221321121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54791.

The product of its digits is 192, while the sum is 19.

The square root of 4221321121 is about 64971.6947677987. The cubic root of 4221321121 is about 1616.1542064035.

Adding to 4221321121 its reverse (1211231224), we get a palindrome (5432552345).

The spelling of 4221321121 in words is "four billion, two hundred twenty-one million, three hundred twenty-one thousand, one hundred twenty-one".