211242400004 has 12 divisors (see below), whose sum is σ = 375734433228. Its totient is φ = 103889704800.

The previous prime is 211242400001. The next prime is 211242400009. The reversal of 211242400004 is 400004242112.

It can be written as a sum of positive squares in 2 ways, for example, as 16796678404 + 194445721600 = 129602^2 + 440960^2 .

It is not an unprimeable number, because it can be changed into a prime (211242400001) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 432873527 + ... + 432874014.

It is an arithmetic number, because the mean of its divisors is an integer number (31311202769).

Almost surely, 2^211242400004 is an apocalyptic number.

It is an amenable number.

211242400004 is a deficient number, since it is larger than the sum of its proper divisors (164492033224).

211242400004 is a wasteful number, since it uses less digits than its factorization.

211242400004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 865747606 (or 865747604 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 20.

Adding to 211242400004 its reverse (400004242112), we get a palindrome (611246642116).

The spelling of 211242400004 in words is "two hundred eleven billion, two hundred forty-two million, four hundred thousand, four".