211132024420 has 24 divisors (see below), whose sum is σ = 443445186744. Its totient is φ = 84439869696.

The previous prime is 211132024351. The next prime is 211132024457. The reversal of 211132024420 is 24420231112.

It can be written as a sum of positive squares in 4 ways, for example, as 2802276 + 211129222144 = 1674^2 + 459488^2 .

It is a junction number, because it is equal to n+sod(n) for n = 211132024391 and 211132024400.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 674419 + ... + 936538.

It is an arithmetic number, because the mean of its divisors is an integer number (18476882781).

Almost surely, 2^211132024420 is an apocalyptic number.

211132024420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

211132024420 is an abundant number, since it is smaller than the sum of its proper divisors (232313162324).

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

211132024420 is a wasteful number, since it uses less digits than its factorization.

211132024420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1617519 (or 1617517 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 22.

Adding to 211132024420 its reverse (24420231112), we get a palindrome (235552255532).

The spelling of 211132024420 in words is "two hundred eleven billion, one hundred thirty-two million, twenty-four thousand, four hundred twenty".