211230433100 has 72 divisors (see below), whose sum is σ = 462346272528. Its totient is φ = 83762380800.

The previous prime is 211230433061. The next prime is 211230433177. The reversal of 211230433100 is 1334032112.

It is a super-2 number, since 2×211230433100² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5403224 + ... + 5442176.

Almost surely, 2^211230433100 is an apocalyptic number.

211230433100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 211230433100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (231173136264).

211230433100 is an abundant number, since it is smaller than the sum of its proper divisors (251115839428).

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

211230433100 is a wasteful number, since it uses less digits than its factorization.

211230433100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39435 (or 39428 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 211230433100 its reverse (1334032112), we get a palindrome (212564465212).

The spelling of 211230433100 in words is "two hundred eleven billion, two hundred thirty million, four hundred thirty-three thousand, one hundred".