1231033132221 has 8 divisors (see below), whose sum is σ = 1647916863264. Its totient is φ = 817419078000.

The previous prime is 1231033132211. The next prime is 1231033132229. The reversal of 1231033132221 is 1222313301321.

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

It is not a de Polignac number, because 1231033132221 - 2¹⁵ = 1231033099453 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1231033132191 and 1231033132200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1231033132229) 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, 817418326 + ... + 817419831.

It is an arithmetic number, because the mean of its divisors is an integer number (205989607908).

Almost surely, 2^{1231033132221} is an apocalyptic number.

It is an amenable number.

1231033132221 is a deficient number, since it is larger than the sum of its proper divisors (416883731043).

1231033132221 is a wasteful number, since it uses less digits than its factorization.

1231033132221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1634838411.

The product of its (nonzero) digits is 1296, while the sum is 24.

Adding to 1231033132221 its reverse (1222313301321), we get a palindrome (2453346433542).

The spelling of 1231033132221 in words is "one trillion, two hundred thirty-one billion, thirty-three million, one hundred thirty-two thousand, two hundred twenty-one".