1331043221131 has 32 divisors (see below), whose sum is σ = 1552536760320. Its totient is φ = 1131039676800.

The previous prime is 1331043221117. The next prime is 1331043221147. The reversal of 1331043221131 is 1311223401331.

It is a cyclic number.

It is not a de Polignac number, because 1331043221131 - 2³⁵ = 1296683482763 is a prime.

It is a super-2 number, since 2×1331043221131² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1331043221096 and 1331043221105.

It is not an unprimeable number, because it can be changed into a prime (1331043221531) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1281000 + ... + 2074378.

It is an arithmetic number, because the mean of its divisors is an integer number (48516773760).

Almost surely, 2^{1331043221131} is an apocalyptic number.

1331043221131 is a deficient number, since it is larger than the sum of its proper divisors (221493539189).

1331043221131 is a wasteful number, since it uses less digits than its factorization.

1331043221131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 793627.

The product of its (nonzero) digits is 1296, while the sum is 25.

Adding to 1331043221131 its reverse (1311223401331), we get a palindrome (2642266622462).

The spelling of 1331043221131 in words is "one trillion, three hundred thirty-one billion, forty-three million, two hundred twenty-one thousand, one hundred thirty-one".