210421122 has 16 divisors (see below), whose sum is σ = 421197312. Its totient is φ = 70081200.

The previous prime is 210421073. The next prime is 210421151. The reversal of 210421122 is 221124012.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6754 + ... + 21597.

It is an arithmetic number, because the mean of its divisors is an integer number (26324832).

Almost surely, 2^210421122 is an apocalyptic number.

210421122 is an abundant number, since it is smaller than the sum of its proper divisors (210776190).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

210421122 is a wasteful number, since it uses less digits than its factorization.

210421122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29593.

The product of its (nonzero) digits is 64, while the sum is 15.

The square root of 210421122 is about 14505.8995584555. The cubic root of 210421122 is about 594.7892500319.

Adding to 210421122 its reverse (221124012), we get a palindrome (431545134).

The spelling of 210421122 in words is "two hundred ten million, four hundred twenty-one thousand, one hundred twenty-two".