11112021201021 has 16 divisors (see below), whose sum is σ = 15958050058944. Its totient is φ = 6837169474944.

The previous prime is 11112021201007. The next prime is 11112021201077. The reversal of 11112021201021 is 12010212021111.

It is a happy number.

It is not a de Polignac number, because 11112021201021 - 2¹⁴ = 11112021184637 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11112021201121) 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, 20508691 + ... + 21043536.

It is an arithmetic number, because the mean of its divisors is an integer number (997378128684).

Almost surely, 2^{11112021201021} is an apocalyptic number.

It is an amenable number.

11112021201021 is a deficient number, since it is larger than the sum of its proper divisors (4846028857923).

11112021201021 is a wasteful number, since it uses less digits than its factorization.

11112021201021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41559100.

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 11112021201021 its reverse (12010212021111), we get a palindrome (23122233222132).

The spelling of 11112021201021 in words is "eleven trillion, one hundred twelve billion, twenty-one million, two hundred one thousand, twenty-one".