421232011 has 4 divisors (see below), whose sum is σ = 421273800. Its totient is φ = 421190224.

The previous prime is 421231997. The next prime is 421232017. The reversal of 421232011 is 110232124.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-421232011 is a prime.

It is a super-2 number, since 2×421232011² = 354872814182208242, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (421232017) 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 3 ways as a sum of consecutive naturals, for example, 4575 + ... + 29383.

It is an arithmetic number, because the mean of its divisors is an integer number (105318450).

Almost surely, 2^421232011 is an apocalyptic number.

421232011 is a deficient number, since it is larger than the sum of its proper divisors (41789).

421232011 is a wasteful number, since it uses less digits than its factorization.

421232011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41788.

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

The square root of 421232011 is about 20523.9375120857. The cubic root of 421232011 is about 749.6187757384.

Adding to 421232011 its reverse (110232124), we get a palindrome (531464135).

The spelling of 421232011 in words is "four hundred twenty-one million, two hundred thirty-two thousand, eleven".