211303233030 has 64 divisors (see below), whose sum is σ = 521045065728. Its totient is φ = 54802396800.

The previous prime is 211303233019. The next prime is 211303233079. The reversal of 211303233030 is 30332303112.

It is a junction number, because it is equal to n+sod(n) for n = 211303232988 and 211303233006.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2794299 + ... + 2868921.

It is an arithmetic number, because the mean of its divisors is an integer number (8141329152).

Almost surely, 2^211303233030 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 211303233030, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (260522532864).

211303233030 is an abundant number, since it is smaller than the sum of its proper divisors (309741832698).

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

211303233030 is a wasteful number, since it uses less digits than its factorization.

211303233030 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77221.

The product of its (nonzero) digits is 972, while the sum is 21.

Adding to 211303233030 its reverse (30332303112), we get a palindrome (241635536142).

The spelling of 211303233030 in words is "two hundred eleven billion, three hundred three million, two hundred thirty-three thousand, thirty".