332100421 has 2 divisors, whose sum is σ = 332100422. Its totient is φ = 332100420.

The previous prime is 332100413. The next prime is 332100443. The reversal of 332100421 is 124001233.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 320911396 + 11189025 = 17914^2 + 3345^2 .

It is an emirp because it is prime and its reverse (124001233) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 332100421 - 2³ = 332100413 is a prime.

It is a super-2 number, since 2×332100421² = 220581379256754482, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 332100395 and 332100404.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (332106421) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 166050210 + 166050211.

It is an arithmetic number, because the mean of its divisors is an integer number (166050211).

Almost surely, 2^332100421 is an apocalyptic number.

It is an amenable number.

332100421 is a deficient number, since it is larger than the sum of its proper divisors (1).

332100421 is an equidigital number, since it uses as much as digits as its factorization.

332100421 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 332100421 is about 18223.6226091302. The cubic root of 332100421 is about 692.5053645533.

Adding to 332100421 its reverse (124001233), we get a palindrome (456101654).

The spelling of 332100421 in words is "three hundred thirty-two million, one hundred thousand, four hundred twenty-one".