11112303021 has 16 divisors (see below), whose sum is σ = 15435040320. Its totient is φ = 7105009280.

The previous prime is 11112303019. The next prime is 11112303029. The reversal of 11112303021 is 12030321111.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 11112303021 - 2¹ = 11112303019 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11112303029) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 758370 + ... + 772883.

It is an arithmetic number, because the mean of its divisors is an integer number (964690020).

Almost surely, 2^11112303021 is an apocalyptic number.

It is an amenable number.

11112303021 is a deficient number, since it is larger than the sum of its proper divisors (4322737299).

11112303021 is a wasteful number, since it uses less digits than its factorization.

11112303021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1531356.

The product of its (nonzero) digits is 36, while the sum is 15.

Adding to 11112303021 its reverse (12030321111), we get a palindrome (23142624132).

The spelling of 11112303021 in words is "eleven billion, one hundred twelve million, three hundred three thousand, twenty-one".