421322101 has 8 divisors (see below), whose sum is σ = 447536664. Its totient is φ = 395266560.

The previous prime is 421322087. The next prime is 421322113. The reversal of 421322101 is 101223124.

It can be written as a sum of positive squares in 4 ways, for example, as 13322500 + 407999601 = 3650^2 + 20199^2 .

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-421322101 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 (421322171) 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, 34270 + ... + 44911.

It is an arithmetic number, because the mean of its divisors is an integer number (55942083).

Almost surely, 2^421322101 is an apocalyptic number.

It is an amenable number.

421322101 is a deficient number, since it is larger than the sum of its proper divisors (26214563).

421322101 is a wasteful number, since it uses less digits than its factorization.

421322101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79511.

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

The square root of 421322101 is about 20526.1321490436. The cubic root of 421322101 is about 749.6722129098.

Adding to 421322101 its reverse (101223124), we get a palindrome (522545225).

The spelling of 421322101 in words is "four hundred twenty-one million, three hundred twenty-two thousand, one hundred one".