421201022 has 8 divisors (see below), whose sum is σ = 689238072. Its totient is φ = 191455000.

The previous prime is 421201019. The next prime is 421201057. The reversal of 421201022 is 220102124.

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

It is a junction number, because it is equal to n+sod(n) for n = 421200988 and 421201006.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9572729 + ... + 9572772.

It is an arithmetic number, because the mean of its divisors is an integer number (86154759).

Almost surely, 2^421201022 is an apocalyptic number.

421201022 is a deficient number, since it is larger than the sum of its proper divisors (268037050).

421201022 is a wasteful number, since it uses less digits than its factorization.

421201022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19145514.

The product of its (nonzero) digits is 64, while the sum is 14.

The square root of 421201022 is about 20523.1825504720. The cubic root of 421201022 is about 749.6003927528.

Adding to 421201022 its reverse (220102124), we get a palindrome (641303146).

The spelling of 421201022 in words is "four hundred twenty-one million, two hundred one thousand, twenty-two".