11031311402021 has 4 divisors (see below), whose sum is σ = 11033823661344. Its totient is φ = 11028799142700.

The previous prime is 11031311402009. The next prime is 11031311402029. The reversal of 11031311402021 is 12020411313011.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 11031311402021 - 2¹⁴ = 11031311385637 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11031311401984 and 11031311402002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11031311402029) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1256123075 + ... + 1256131856.

It is an arithmetic number, because the mean of its divisors is an integer number (2758455915336).

Almost surely, 2^{11031311402021} is an apocalyptic number.

It is an amenable number.

11031311402021 is a deficient number, since it is larger than the sum of its proper divisors (2512259323).

11031311402021 is an equidigital number, since it uses as much as digits as its factorization.

11031311402021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2512259322.

The product of its (nonzero) digits is 144, while the sum is 20.

Adding to 11031311402021 its reverse (12020411313011), we get a palindrome (23051722715032).

The spelling of 11031311402021 in words is "eleven trillion, thirty-one billion, three hundred eleven million, four hundred two thousand, twenty-one".