4201021321 has 12 divisors (see below), whose sum is σ = 4897393488. Its totient is φ = 3593145192.

The previous prime is 4201021303. The next prime is 4201021339. The reversal of 4201021321 is 1231201024.

It is an interprime number because it is at equal distance from previous prime (4201021303) and next prime (4201021339).

It is not a de Polignac number, because 4201021321 - 2⁷ = 4201021193 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 4201021295 and 4201021304.

It is not an unprimeable number, because it can be changed into a prime (4201021381) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 68911 + ... + 114676.

It is an arithmetic number, because the mean of its divisors is an integer number (408116124).

Almost surely, 2^4201021321 is an apocalyptic number.

It is an amenable number.

4201021321 is a deficient number, since it is larger than the sum of its proper divisors (696372167).

4201021321 is a wasteful number, since it uses less digits than its factorization.

4201021321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 184068 (or 184061 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 16.

The square root of 4201021321 is about 64815.2861676935. The cubic root of 4201021321 is about 1613.5594154696.

Adding to 4201021321 its reverse (1231201024), we get a palindrome (5432222345).

The spelling of 4201021321 in words is "four billion, two hundred one million, twenty-one thousand, three hundred twenty-one".