212261234244 has 48 divisors (see below), whose sum is σ = 510700946112. Its totient is φ = 68582380672.

The previous prime is 212261234219. The next prime is 212261234249. The reversal of 212261234244 is 442432162212.

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

It is not an unprimeable number, because it can be changed into a prime (212261234249) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1957719 + ... + 2063294.

It is an arithmetic number, because the mean of its divisors is an integer number (10639603044).

Almost surely, 2^212261234244 is an apocalyptic number.

It is an amenable number.

212261234244 is an abundant number, since it is smaller than the sum of its proper divisors (298439711868).

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

212261234244 is a wasteful number, since it uses less digits than its factorization.

212261234244 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4021156 (or 4021154 counting only the distinct ones).

The product of its digits is 36864, while the sum is 33.

Adding to 212261234244 its reverse (442432162212), we get a palindrome (654693396456).

The spelling of 212261234244 in words is "two hundred twelve billion, two hundred sixty-one million, two hundred thirty-four thousand, two hundred forty-four".