211234231242 has 64 divisors (see below), whose sum is σ = 495216720000. Its totient is φ = 66556836864.

The previous prime is 211234231211. The next prime is 211234231259. The reversal of 211234231242 is 242132432112.

211234231242 is a `hidden beast` number, since 2 + 1 + 1 + 2 + 342 + 312 + 4 + 2 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

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, 231408 + ... + 689940.

It is an arithmetic number, because the mean of its divisors is an integer number (7737761250).

Almost surely, 2^211234231242 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 211234231242, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (247608360000).

211234231242 is an abundant number, since it is smaller than the sum of its proper divisors (283982488758).

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

211234231242 is a wasteful number, since it uses less digits than its factorization.

211234231242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 459012 (or 459006 counting only the distinct ones).

The product of its digits is 4608, while the sum is 27.

Adding to 211234231242 its reverse (242132432112), we get a palindrome (453366663354).

The spelling of 211234231242 in words is "two hundred eleven billion, two hundred thirty-four million, two hundred thirty-one thousand, two hundred forty-two".