11112021011 has 24 divisors (see below), whose sum is σ = 13978508544. Its totient is φ = 8755326720.

The previous prime is 11112020951. The next prime is 11112021017. The reversal of 11112021011 is 11012021111.

It is not a de Polignac number, because 11112021011 - 2²⁶ = 11044912147 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 11112020983 and 11112021001.

It is not an unprimeable number, because it can be changed into a prime (11112021017) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 117326 + ... + 189708.

It is an arithmetic number, because the mean of its divisors is an integer number (582437856).

Almost surely, 2^11112021011 is an apocalyptic number.

11112021011 is a deficient number, since it is larger than the sum of its proper divisors (2866487533).

11112021011 is a wasteful number, since it uses less digits than its factorization.

11112021011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72651 (or 72644 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 11.

Adding to 11112021011 its reverse (11012021111), we get a palindrome (22124042122).

The spelling of 11112021011 in words is "eleven billion, one hundred twelve million, twenty-one thousand, eleven".