212511131242 has 16 divisors (see below), whose sum is σ = 329068806912. Its totient is φ = 102821931360.

The previous prime is 212511131237. The next prime is 212511131267. The reversal of 212511131242 is 242131115212.

212511131242 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1073973 + ... + 1256359.

It is an arithmetic number, because the mean of its divisors is an integer number (20566800432).

Almost surely, 2^212511131242 is an apocalyptic number.

212511131242 is a deficient number, since it is larger than the sum of its proper divisors (116557675670).

212511131242 is a wasteful number, since it uses less digits than its factorization.

212511131242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 201213.

The product of its digits is 960, while the sum is 25.

Adding to 212511131242 its reverse (242131115212), we get a palindrome (454642246454).

The spelling of 212511131242 in words is "two hundred twelve billion, five hundred eleven million, one hundred thirty-one thousand, two hundred forty-two".