421121211 has 32 divisors (see below), whose sum is σ = 653990400. Its totient is φ = 236079360.

The previous prime is 421121203. The next prime is 421121219. The reversal of 421121211 is 112121124.

It is an interprime number because it is at equal distance from previous prime (421121203) and next prime (421121219).

It is not a de Polignac number, because 421121211 - 2³ = 421121203 is a prime.

It is not an unprimeable number, because it can be changed into a prime (421121219) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 258981 + ... + 260601.

It is an arithmetic number, because the mean of its divisors is an integer number (20437200).

Almost surely, 2^421121211 is an apocalyptic number.

421121211 is a deficient number, since it is larger than the sum of its proper divisors (232869189).

421121211 is a wasteful number, since it uses less digits than its factorization.

421121211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1859.

The product of its digits is 32, while the sum is 15.

The square root of 421121211 is about 20521.2380474473. The cubic root of 421121211 is about 749.5530439155.

Adding to 421121211 its reverse (112121124), we get a palindrome (533242335).

It can be divided in two parts, 42 and 1121211, that added together give a triangular number (1121253 = T₁₄₉₇).

The spelling of 421121211 in words is "four hundred twenty-one million, one hundred twenty-one thousand, two hundred eleven".