1031212133221 has 8 divisors (see below), whose sum is σ = 1041471680544. Its totient is φ = 1020953557200.

The previous prime is 1031212133201. The next prime is 1031212133321. The reversal of 1031212133221 is 1223312121301.

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 1031212133221 - 2⁷ = 1031212133093 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1031212133192 and 1031212133201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1031212133201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1992966 + ... + 2456488.

It is an arithmetic number, because the mean of its divisors is an integer number (130183960068).

Almost surely, 2^{1031212133221} is an apocalyptic number.

It is an amenable number.

1031212133221 is a deficient number, since it is larger than the sum of its proper divisors (10259547323).

1031212133221 is a wasteful number, since it uses less digits than its factorization.

1031212133221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 485651.

The product of its (nonzero) digits is 432, while the sum is 22.

Adding to 1031212133221 its reverse (1223312121301), we get a palindrome (2254524254522).

The spelling of 1031212133221 in words is "one trillion, thirty-one billion, two hundred twelve million, one hundred thirty-three thousand, two hundred twenty-one".