211021232130 has 256 divisors, whose sum is σ = 584584750080. Its totient is φ = 54141696000.

The previous prime is 211021232129. The next prime is 211021232173. The reversal of 211021232130 is 31232120112.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 141339664 + ... + 141341156.

It is an arithmetic number, because the mean of its divisors is an integer number (2283534180).

Almost surely, 2^211021232130 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 211021232130, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (292292375040).

211021232130 is an abundant number, since it is smaller than the sum of its proper divisors (373563517950).

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

211021232130 is a wasteful number, since it uses less digits than its factorization.

211021232130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1754 (or 1748 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

Adding to 211021232130 its reverse (31232120112), we get a palindrome (242253352242).

The spelling of 211021232130 in words is "two hundred eleven billion, twenty-one million, two hundred thirty-two thousand, one hundred thirty".