221311310042 has 8 divisors (see below), whose sum is σ = 332159862132. Its totient is φ = 110591356000.

The previous prime is 221311310029. The next prime is 221311310047. The reversal of 221311310042 is 240013113122.

221311310042 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 221049485281 + 261824761 = 470159^2 + 16181^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 221311309996 and 221311310023.

It is not an unprimeable number, because it can be changed into a prime (221311310047) 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, 32145209 + ... + 32152092.

Almost surely, 2^221311310042 is an apocalyptic number.

221311310042 is a deficient number, since it is larger than the sum of its proper divisors (110848552090).

221311310042 is a wasteful number, since it uses less digits than its factorization.

221311310042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64299024.

The product of its (nonzero) digits is 288, while the sum is 20.

Adding to 221311310042 its reverse (240013113122), we get a palindrome (461324423164).

The spelling of 221311310042 in words is "two hundred twenty-one billion, three hundred eleven million, three hundred ten thousand, forty-two".