221013313331 has 16 divisors (see below), whose sum is σ = 237492314400. Its totient is φ = 205048972800.

The previous prime is 221013313307. The next prime is 221013313333. The reversal of 221013313331 is 133313310122.

It is not a de Polignac number, because 221013313331 - 2¹⁰ = 221013312307 is a prime.

It is a super-2 number, since 2×221013313331² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 221013313297 and 221013313306.

It is not an unprimeable number, because it can be changed into a prime (221013313333) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 150950 + ... + 681771.

It is an arithmetic number, because the mean of its divisors is an integer number (14843269650).

Almost surely, 2^221013313331 is an apocalyptic number.

221013313331 is a deficient number, since it is larger than the sum of its proper divisors (16479001069).

221013313331 is a wasteful number, since it uses less digits than its factorization.

221013313331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 833030.

The product of its (nonzero) digits is 972, while the sum is 23.

Adding to 221013313331 its reverse (133313310122), we get a palindrome (354326623453).

The spelling of 221013313331 in words is "two hundred twenty-one billion, thirteen million, three hundred thirteen thousand, three hundred thirty-one".