1221030323131 has 8 divisors (see below), whose sum is σ = 1285440665600. Its totient is φ = 1156634539560.

The previous prime is 1221030323101. The next prime is 1221030323141. The reversal of 1221030323131 is 1313230301221.

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 1221030323131 - 2⁷ = 1221030323003 is a prime.

It is a super-2 number, since 2×1221030323131² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1221030323101) 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, 3467355 + ... + 3803236.

It is an arithmetic number, because the mean of its divisors is an integer number (160680083200).

Almost surely, 2^{1221030323131} is an apocalyptic number.

1221030323131 is a deficient number, since it is larger than the sum of its proper divisors (64410342469).

1221030323131 is an equidigital number, since it uses as much as digits as its factorization.

1221030323131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7279449.

The product of its (nonzero) digits is 648, while the sum is 22.

Adding to 1221030323131 its reverse (1313230301221), we get a palindrome (2534260624352).

The spelling of 1221030323131 in words is "one trillion, two hundred twenty-one billion, thirty million, three hundred twenty-three thousand, one hundred thirty-one".