213221140442 has 8 divisors (see below), whose sum is σ = 338645340756. Its totient is φ = 100339360192.

The previous prime is 213221140417. The next prime is 213221140469. The reversal of 213221140442 is 244041122312.

It can be written as a sum of positive squares in 2 ways, for example, as 203419942441 + 9801198001 = 451021^2 + 99001^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3135604973 + ... + 3135605040.

Almost surely, 2^213221140442 is an apocalyptic number.

213221140442 is a deficient number, since it is larger than the sum of its proper divisors (125424200314).

213221140442 is a wasteful number, since it uses less digits than its factorization.

213221140442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6271210032.

The product of its (nonzero) digits is 3072, while the sum is 26.

Adding to 213221140442 its reverse (244041122312), we get a palindrome (457262262754).

The spelling of 213221140442 in words is "two hundred thirteen billion, two hundred twenty-one million, one hundred forty thousand, four hundred forty-two".