221311312202 has 8 divisors (see below), whose sum is σ = 331978248576. Its totient is φ = 110651896012.

The previous prime is 221311312063. The next prime is 221311312223. The reversal of 221311312202 is 202213113122.

221311312202 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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

It is a super-2 number, since 2×221311312202² (a number of 23 digits) contains 22 as substring.

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, 1805888 + ... + 1924539.

It is an arithmetic number, because the mean of its divisors is an integer number (41497281072).

Almost surely, 2^221311312202 is an apocalyptic number.

221311312202 is a deficient number, since it is larger than the sum of its proper divisors (110666936374).

221311312202 is a wasteful number, since it uses less digits than its factorization.

221311312202 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3760092.

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

Adding to 221311312202 its reverse (202213113122), we get a palindrome (423524425324).

The spelling of 221311312202 in words is "two hundred twenty-one billion, three hundred eleven million, three hundred twelve thousand, two hundred two".