221001113133 has 24 divisors (see below), whose sum is σ = 322537878936. Its totient is φ = 145805904000.

The previous prime is 221001113101. The next prime is 221001113227. The reversal of 221001113133 is 331311100122.

It can be written as a sum of positive squares in 4 ways, for example, as 108898020009 + 112103093124 = 329997^2 + 334818^2 .

It is not a de Polignac number, because 221001113133 - 2⁵ = 221001113101 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221001113933) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1889391 + ... + 2002947.

It is an arithmetic number, because the mean of its divisors is an integer number (13439078289).

Almost surely, 2^221001113133 is an apocalyptic number.

It is an amenable number.

221001113133 is a deficient number, since it is larger than the sum of its proper divisors (101536765803).

221001113133 is a wasteful number, since it uses less digits than its factorization.

221001113133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 115805 (or 115802 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 18.

Adding to 221001113133 its reverse (331311100122), we get a palindrome (552312213255).

The spelling of 221001113133 in words is "two hundred twenty-one billion, one million, one hundred thirteen thousand, one hundred thirty-three".