1331011110021 has 32 divisors (see below), whose sum is σ = 1824369715200. Its totient is φ = 862842689280.

The previous prime is 1331011110017. The next prime is 1331011110067. The reversal of 1331011110021 is 1200111101331.

It is not a de Polignac number, because 1331011110021 - 2² = 1331011110017 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1331011110521) 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, 130345606 + ... + 130355816.

It is an arithmetic number, because the mean of its divisors is an integer number (57011553600).

Almost surely, 2^{1331011110021} is an apocalyptic number.

It is an amenable number.

1331011110021 is a deficient number, since it is larger than the sum of its proper divisors (493358605179).

1331011110021 is a wasteful number, since it uses less digits than its factorization.

1331011110021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18569.

The product of its (nonzero) digits is 18, while the sum is 15.

Adding to 1331011110021 its reverse (1200111101331), we get a palindrome (2531122211352).

The spelling of 1331011110021 in words is "one trillion, three hundred thirty-one billion, eleven million, one hundred ten thousand, twenty-one".