11213202331 has 4 divisors (see below), whose sum is σ = 11451781152. Its totient is φ = 10974623512.

The previous prime is 11213202311. The next prime is 11213202337. The reversal of 11213202331 is 13320231211.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 13320231211 = 7 ⋅1902890173.

It is a cyclic number.

It is not a de Polignac number, because 11213202331 - 2²¹ = 11211105179 is a prime.

It is a super-2 number, since 2×11213202331² (a number of 21 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 = 11213202299 and 11213202308.

It is not an unprimeable number, because it can be changed into a prime (11213202337) 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, 119289340 + ... + 119289433.

It is an arithmetic number, because the mean of its divisors is an integer number (2862945288).

Almost surely, 2^11213202331 is an apocalyptic number.

11213202331 is a deficient number, since it is larger than the sum of its proper divisors (238578821).

11213202331 is an equidigital number, since it uses as much as digits as its factorization.

11213202331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 238578820.

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 11213202331 its reverse (13320231211), we get a palindrome (24533433542).

The spelling of 11213202331 in words is "eleven billion, two hundred thirteen million, two hundred two thousand, three hundred thirty-one".