11112100022021 has 16 divisors (see below), whose sum is σ = 11435504087040. Its totient is φ = 10792469041200.

The previous prime is 11112100021993. The next prime is 11112100022027. The reversal of 11112100022021 is 12022000121111.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11112100022021 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11112100021987 and 11112100022005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11112100022027) 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, 6053210 + ... + 7672388.

It is an arithmetic number, because the mean of its divisors is an integer number (714719005440).

Almost surely, 2^{11112100022021} is an apocalyptic number.

It is an amenable number.

11112100022021 is a deficient number, since it is larger than the sum of its proper divisors (323404065019).

11112100022021 is a wasteful number, since it uses less digits than its factorization.

11112100022021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1620344.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 11112100022021 its reverse (12022000121111), we get a palindrome (23134100143132).

The spelling of 11112100022021 in words is "eleven trillion, one hundred twelve billion, one hundred million, twenty-two thousand, twenty-one".