422121211 has 4 divisors (see below), whose sum is σ = 424561392. Its totient is φ = 419681032.

The previous prime is 422121209. The next prime is 422121221. The reversal of 422121211 is 112121224.

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

It is a cyclic number.

It is not a de Polignac number, because 422121211 - 2¹ = 422121209 is a prime.

It is a super-2 number, since 2×422121211² = 356372633552213042, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (422121221) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1219831 + ... + 1220176.

It is an arithmetic number, because the mean of its divisors is an integer number (106140348).

Almost surely, 2^422121211 is an apocalyptic number.

422121211 is a deficient number, since it is larger than the sum of its proper divisors (2440181).

422121211 is a wasteful number, since it uses less digits than its factorization.

422121211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2440180.

The product of its digits is 64, while the sum is 16.

The square root of 422121211 is about 20545.5886019359. The cubic root of 422121211 is about 750.1458744405.

Adding to 422121211 its reverse (112121224), we get a palindrome (534242435).

The spelling of 422121211 in words is "four hundred twenty-two million, one hundred twenty-one thousand, two hundred eleven".