2231221023232 has 20 divisors (see below), whose sum is σ = 4458084193926. Its totient is φ = 1115610511360.

The previous prime is 2231221023089. The next prime is 2231221023233. The reversal of 2231221023232 is 2323201221322.

It can be written as a sum of positive squares in only one way, i.e., 2230410823936 + 810199296 = 1493456^2 + 28464^2 .

It is a super-3 number, since 3×2231221023232³ (a number of 38 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2231221023197 and 2231221023206.

It is not an unprimeable number, because it can be changed into a prime (2231221023233) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2178926269 + ... + 2178927292.

Almost surely, 2^{2231221023232} is an apocalyptic number.

It is an amenable number.

2231221023232 is a deficient number, since it is larger than the sum of its proper divisors (2226863170694).

2231221023232 is an frugal number, since it uses more digits than its factorization.

2231221023232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4357853579 (or 4357853563 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 25.

Adding to 2231221023232 its reverse (2323201221322), we get a palindrome (4554422244554).

The spelling of 2231221023232 in words is "two trillion, two hundred thirty-one billion, two hundred twenty-one million, twenty-three thousand, two hundred thirty-two".