11031013012021 has 4 divisors (see below), whose sum is σ = 11186379392544. Its totient is φ = 10875646631500.

The previous prime is 11031013011937. The next prime is 11031013012037. The reversal of 11031013012021 is 12021031013011.

It is a happy number.

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 11031013012021 - 2²⁹ = 11030476141109 is a prime.

It is a super-2 number, since 2×11031013012021² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11031013011986 and 11031013012004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11031013012091) 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, 77683190155 + ... + 77683190296.

It is an arithmetic number, because the mean of its divisors is an integer number (2796594848136).

Almost surely, 2^{11031013012021} is an apocalyptic number.

It is an amenable number.

11031013012021 is a deficient number, since it is larger than the sum of its proper divisors (155366380523).

11031013012021 is an equidigital number, since it uses as much as digits as its factorization.

11031013012021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 155366380522.

The product of its (nonzero) digits is 36, while the sum is 16.

Adding to 11031013012021 its reverse (12021031013011), we get a palindrome (23052044025032).

The spelling of 11031013012021 in words is "eleven trillion, thirty-one billion, thirteen million, twelve thousand, twenty-one".