221020113331 has 8 divisors (see below), whose sum is σ = 222783197184. Its totient is φ = 219257385480.

The previous prime is 221020113319. The next prime is 221020113361. The reversal of 221020113331 is 133311020122.

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

It is a cyclic number.

It is not a de Polignac number, because 221020113331 - 2²¹ = 221018016179 is a prime.

It is a super-3 number, since 3×221020113331³ (a number of 35 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 221020113299 and 221020113308.

It is not an unprimeable number, because it can be changed into a prime (221020113361) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1235916 + ... + 1403398.

It is an arithmetic number, because the mean of its divisors is an integer number (27847899648).

Almost surely, 2^221020113331 is an apocalyptic number.

221020113331 is a deficient number, since it is larger than the sum of its proper divisors (1763083853).

221020113331 is a wasteful number, since it uses less digits than its factorization.

221020113331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 178001.

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 221020113331 its reverse (133311020122), we get a palindrome (354331133453).

The spelling of 221020113331 in words is "two hundred twenty-one billion, twenty million, one hundred thirteen thousand, three hundred thirty-one".