1331043011421 has 8 divisors (see below), whose sum is σ = 1774729904640. Its totient is φ = 887359062912.

The previous prime is 1331043011411. The next prime is 1331043011423. The reversal of 1331043011421 is 1241103401331.

It is a happy number.

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

It is not a de Polignac number, because 1331043011421 - 2³⁰ = 1329969269597 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1331043011391 and 1331043011400.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1331043011423) 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, 743236 + ... + 1792898.

It is an arithmetic number, because the mean of its divisors is an integer number (221841238080).

Almost surely, 2^{1331043011421} is an apocalyptic number.

It is an amenable number.

1331043011421 is a deficient number, since it is larger than the sum of its proper divisors (443686893219).

1331043011421 is a wasteful number, since it uses less digits than its factorization.

1331043011421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1472355.

The product of its (nonzero) digits is 864, while the sum is 24.

Adding to 1331043011421 its reverse (1241103401331), we get a palindrome (2572146412752).

The spelling of 1331043011421 in words is "one trillion, three hundred thirty-one billion, forty-three million, eleven thousand, four hundred twenty-one".