211242144244 has 6 divisors (see below), whose sum is σ = 369673752434. Its totient is φ = 105621072120.

The previous prime is 211242144241. The next prime is 211242144257. The reversal of 211242144244 is 442441242112.

It can be written as a sum of positive squares in only one way, i.e., 151492208400 + 59749935844 = 389220^2 + 244438^2 .

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211242144241) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26405268027 + ... + 26405268034.

Almost surely, 2^211242144244 is an apocalyptic number.

It is an amenable number.

211242144244 is a deficient number, since it is larger than the sum of its proper divisors (158431608190).

211242144244 is a wasteful number, since it uses less digits than its factorization.

211242144244 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52810536065 (or 52810536063 counting only the distinct ones).

The product of its digits is 16384, while the sum is 31.

Adding to 211242144244 its reverse (442441242112), we get a palindrome (653683386356).

The spelling of 211242144244 in words is "two hundred eleven billion, two hundred forty-two million, one hundred forty-four thousand, two hundred forty-four".