11112112101021 has 16 divisors (see below), whose sum is σ = 15313692570624. Its totient is φ = 7163101222064.

The previous prime is 11112112100863. The next prime is 11112112101029. The reversal of 11112112101021 is 12010121121111.

It is a cyclic number.

It is not a de Polignac number, because 11112112101021 - 2³⁵ = 11077752362653 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11112112101029) 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, 474743151 + ... + 474766556.

It is an arithmetic number, because the mean of its divisors is an integer number (957105785664).

Almost surely, 2^{11112112101021} is an apocalyptic number.

It is an amenable number.

11112112101021 is a deficient number, since it is larger than the sum of its proper divisors (4201580469603).

11112112101021 is an equidigital number, since it uses as much as digits as its factorization.

11112112101021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 949509840.

The product of its (nonzero) digits is 8, while the sum is 15.

Adding to 11112112101021 its reverse (12010121121111), we get a palindrome (23122233222132).

The spelling of 11112112101021 in words is "eleven trillion, one hundred twelve billion, one hundred twelve million, one hundred one thousand, twenty-one".