11021301131 has 4 divisors (see below), whose sum is σ = 11022507912. Its totient is φ = 11020094352.

The previous prime is 11021301119. The next prime is 11021301149. The reversal of 11021301131 is 13110312011.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11021301131 is a prime.

It is a super-2 number, since 2×11021301131² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11021304131) 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, 589586 + ... + 607991.

It is an arithmetic number, because the mean of its divisors is an integer number (2755626978).

Almost surely, 2^11021301131 is an apocalyptic number.

11021301131 is a deficient number, since it is larger than the sum of its proper divisors (1206781).

11021301131 is an equidigital number, since it uses as much as digits as its factorization.

11021301131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1206780.

The product of its (nonzero) digits is 18, while the sum is 14.

Adding to 11021301131 its reverse (13110312011), we get a palindrome (24131613142).

The spelling of 11021301131 in words is "eleven billion, twenty-one million, three hundred one thousand, one hundred thirty-one".