1031230011221 has 8 divisors (see below), whose sum is σ = 1032160617600. Its totient is φ = 1030299684048.

The previous prime is 1031230011197. The next prime is 1031230011233. The reversal of 1031230011221 is 1221100321301.

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

It is a cyclic number.

It is not a de Polignac number, because 1031230011221 - 2²² = 1031225816917 is a prime.

It is a super-3 number, since 3×1031230011221³ (a number of 37 digits) contains 333 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1031230011221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1031230011121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7707920 + ... + 7840566.

It is an arithmetic number, because the mean of its divisors is an integer number (129020077200).

Almost surely, 2^{1031230011221} is an apocalyptic number.

It is an amenable number.

1031230011221 is a deficient number, since it is larger than the sum of its proper divisors (930606379).

1031230011221 is a wasteful number, since it uses less digits than its factorization.

1031230011221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 139603.

The product of its (nonzero) digits is 72, while the sum is 17.

Adding to 1031230011221 its reverse (1221100321301), we get a palindrome (2252330332522).

The spelling of 1031230011221 in words is "one trillion, thirty-one billion, two hundred thirty million, eleven thousand, two hundred twenty-one".