211532420330 has 96 divisors (see below), whose sum is σ = 486155079360. Its totient is φ = 65527418880.

The previous prime is 211532420327. The next prime is 211532420347. The reversal of 211532420330 is 33024235112.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 211532420330.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 758186 + ... + 998954.

It is an arithmetic number, because the mean of its divisors is an integer number (5064115410).

Almost surely, 2^211532420330 is an apocalyptic number.

211532420330 is an abundant number, since it is smaller than the sum of its proper divisors (274622659030).

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

211532420330 is a wasteful number, since it uses less digits than its factorization.

211532420330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 240964 (or 240957 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 26.

Adding to 211532420330 its reverse (33024235112), we get a palindrome (244556655442).

The spelling of 211532420330 in words is "two hundred eleven billion, five hundred thirty-two million, four hundred twenty thousand, three hundred thirty".