421021122 has 8 divisors (see below), whose sum is σ = 842042256. Its totient is φ = 140340372.

The previous prime is 421021121. The next prime is 421021123. The reversal of 421021122 is 221120124.

It is an interprime number because it is at equal distance from previous prime (421021121) and next prime (421021123).

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

421021122 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (421021121) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 35085088 + ... + 35085099.

It is an arithmetic number, because the mean of its divisors is an integer number (105255282).

Almost surely, 2^421021122 is an apocalyptic number.

421021122 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

421021122 is a wasteful number, since it uses less digits than its factorization.

421021122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70170192.

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

The square root of 421021122 is about 20518.7992338733. The cubic root of 421021122 is about 749.4936564541.

Adding to 421021122 its reverse (221120124), we get a palindrome (642141246).

The spelling of 421021122 in words is "four hundred twenty-one million, twenty-one thousand, one hundred twenty-two".