421224022 has 4 divisors (see below), whose sum is σ = 631836036. Its totient is φ = 210612010.

The previous prime is 421224017. The next prime is 421224061. The reversal of 421224022 is 220422124.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105306004 + ... + 105306007.

It is an arithmetic number, because the mean of its divisors is an integer number (157959009).

Almost surely, 2^421224022 is an apocalyptic number.

421224022 is a deficient number, since it is larger than the sum of its proper divisors (210612014).

421224022 is a wasteful number, since it uses less digits than its factorization.

421224022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 210612013.

The product of its (nonzero) digits is 512, while the sum is 19.

The square root of 421224022 is about 20523.7428847664. The cubic root of 421224022 is about 749.6140366697.

Adding to 421224022 its reverse (220422124), we get a palindrome (641646146).

The spelling of 421224022 in words is "four hundred twenty-one million, two hundred twenty-four thousand, twenty-two".