221144331201331 has 8 divisors (see below), whose sum is σ = 230759708670720. Its totient is φ = 211528987610952.

The previous prime is 221144331201317. The next prime is 221144331201347. The reversal of 221144331201331 is 133102133441122.

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

It is not a de Polignac number, because 221144331201331 - 2¹³ = 221144331193139 is a prime.

It is a super-2 number, since 2×221144331201331² (a number of 29 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 = 221144331201293 and 221144331201302.

It is not an unprimeable number, because it can be changed into a prime (221144331201631) 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, 5348706 + ... + 21700168.

It is an arithmetic number, because the mean of its divisors is an integer number (28844963583840).

Almost surely, 2^{221144331201331} is an apocalyptic number.

221144331201331 is a deficient number, since it is larger than the sum of its proper divisors (9615377469389).

221144331201331 is a wasteful number, since it uses less digits than its factorization.

221144331201331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16939505.

The product of its (nonzero) digits is 10368, while the sum is 31.

Adding to 221144331201331 its reverse (133102133441122), we get a palindrome (354246464642453).

The spelling of 221144331201331 in words is "two hundred twenty-one trillion, one hundred forty-four billion, three hundred thirty-one million, two hundred one thousand, three hundred thirty-one".