462221021 has 4 divisors (see below), whose sum is σ = 468072000. Its totient is φ = 456370044.

The previous prime is 462220991. The next prime is 462221027. The reversal of 462221021 is 120122264.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 462221021 - 2¹⁸ = 461958877 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 462220984 and 462221002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (462221027) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2925371 + ... + 2925528.

It is an arithmetic number, because the mean of its divisors is an integer number (117018000).

Almost surely, 2^462221021 is an apocalyptic number.

It is an amenable number.

462221021 is a deficient number, since it is larger than the sum of its proper divisors (5850979).

462221021 is an equidigital number, since it uses as much as digits as its factorization.

462221021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5850978.

The product of its (nonzero) digits is 384, while the sum is 20.

The square root of 462221021 is about 21499.3260592047. The cubic root of 462221021 is about 773.1846632351.

Adding to 462221021 its reverse (120122264), we get a palindrome (582343285).

The spelling of 462221021 in words is "four hundred sixty-two million, two hundred twenty-one thousand, twenty-one".