11231120011 has 8 divisors (see below), whose sum is σ = 11290752000. Its totient is φ = 11171520360.

The previous prime is 11231120009. The next prime is 11231120081. The reversal of 11231120011 is 11002113211.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 11231120011 - 2¹ = 11231120009 is a prime.

It is a super-2 number, since 2×11231120011² (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 = 11231119973 and 11231120000.

It is not an unprimeable number, because it can be changed into a prime (11231120081) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1045176 + ... + 1055866.

It is an arithmetic number, because the mean of its divisors is an integer number (1411344000).

Almost surely, 2^11231120011 is an apocalyptic number.

11231120011 is a deficient number, since it is larger than the sum of its proper divisors (59631989).

11231120011 is a wasteful number, since it uses less digits than its factorization.

11231120011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16169.

The product of its (nonzero) digits is 12, while the sum is 13.

Adding to 11231120011 its reverse (11002113211), we get a palindrome (22233233222).

The spelling of 11231120011 in words is "eleven billion, two hundred thirty-one million, one hundred twenty thousand, eleven".