4201221331 has 16 divisors (see below), whose sum is σ = 4473817920. Its totient is φ = 3936366720.

The previous prime is 4201221281. The next prime is 4201221359. The reversal of 4201221331 is 1331221024.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 4201221331 - 2¹⁷ = 4201090259 is a prime.

It is a super-2 number, since 2×4201221331² = 35300521344098823122, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 4201221299 and 4201221308.

It is not an unprimeable number, because it can be changed into a prime (4201221631) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 861841 + ... + 866701.

It is an arithmetic number, because the mean of its divisors is an integer number (279613620).

Almost surely, 2^4201221331 is an apocalyptic number.

4201221331 is a deficient number, since it is larger than the sum of its proper divisors (272596589).

4201221331 is a wasteful number, since it uses less digits than its factorization.

4201221331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5646.

The product of its (nonzero) digits is 288, while the sum is 19.

The square root of 4201221331 is about 64816.8290723945. The cubic root of 4201221331 is about 1613.5850221711.

Adding to 4201221331 its reverse (1331221024), we get a palindrome (5532442355).

The spelling of 4201221331 in words is "four billion, two hundred one million, two hundred twenty-one thousand, three hundred thirty-one".