10111111122021 has 32 divisors (see below), whose sum is σ = 16606094050560. Its totient is φ = 5328993590784.

The previous prime is 10111111122019. The next prime is 10111111122029. The reversal of 10111111122021 is 12022111111101.

10111111122021 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 10111111122021 - 2¹ = 10111111122019 is a prime.

It is a super-2 number, since 2×10111111122021² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10111111122029) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 14732440 + ... + 15403473.

It is an arithmetic number, because the mean of its divisors is an integer number (518940439080).

Almost surely, 2^{10111111122021} is an apocalyptic number.

It is an amenable number.

10111111122021 is a deficient number, since it is larger than the sum of its proper divisors (6494982928539).

10111111122021 is a wasteful number, since it uses less digits than its factorization.

10111111122021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30137165.

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

Adding to 10111111122021 its reverse (12022111111101), we get a palindrome (22133222233122).

The spelling of 10111111122021 in words is "ten trillion, one hundred eleven billion, one hundred eleven million, one hundred twenty-two thousand, twenty-one".