213220231242 has 16 divisors (see below), whose sum is σ = 427785704352. Its totient is φ = 70849203440.

The previous prime is 213220231219. The next prime is 213220231291. The reversal of 213220231242 is 242132022312.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 56049684 + ... + 56053487.

It is an arithmetic number, because the mean of its divisors is an integer number (26736606522).

Almost surely, 2^213220231242 is an apocalyptic number.

213220231242 is an abundant number, since it is smaller than the sum of its proper divisors (214565473110).

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

213220231242 is a wasteful number, since it uses less digits than its factorization.

213220231242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 112103493.

The product of its (nonzero) digits is 2304, while the sum is 24.

Adding to 213220231242 its reverse (242132022312), we get a palindrome (455352253554).

The spelling of 213220231242 in words is "two hundred thirteen billion, two hundred twenty million, two hundred thirty-one thousand, two hundred forty-two".