10011112122021 has 4 divisors (see below), whose sum is σ = 13348149496032. Its totient is φ = 6674074748012.

The previous prime is 10011112122007. The next prime is 10011112122023. The reversal of 10011112122021 is 12022121111001.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-10011112122021 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10011112122023) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1668518687001 + ... + 1668518687006.

It is an arithmetic number, because the mean of its divisors is an integer number (3337037374008).

Almost surely, 2^{10011112122021} is an apocalyptic number.

It is an amenable number.

10011112122021 is a deficient number, since it is larger than the sum of its proper divisors (3337037374011).

10011112122021 is an equidigital number, since it uses as much as digits as its factorization.

10011112122021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3337037374010.

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

Adding to 10011112122021 its reverse (12022121111001), we get a palindrome (22033233233022).

The spelling of 10011112122021 in words is "ten trillion, eleven billion, one hundred twelve million, one hundred twenty-two thousand, twenty-one".