11111012022021 has 16 divisors (see below), whose sum is σ = 14923444641600. Its totient is φ = 7352964908928.

The previous prime is 11111012021983. The next prime is 11111012022053. The reversal of 11111012022021 is 12022021011111.

It is a happy number.

It is not a de Polignac number, because 11111012022021 - 2¹¹ = 11111012019973 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11111012026021) 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, 9465315 + ... + 10574223.

It is an arithmetic number, because the mean of its divisors is an integer number (932715290100).

Almost surely, 2^{11111012022021} is an apocalyptic number.

It is an amenable number.

11111012022021 is a deficient number, since it is larger than the sum of its proper divisors (3812432619579).

11111012022021 is a wasteful number, since it uses less digits than its factorization.

11111012022021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1133428.

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

Adding to 11111012022021 its reverse (12022021011111), we get a palindrome (23133033033132).

The spelling of 11111012022021 in words is "eleven trillion, one hundred eleven billion, twelve million, twenty-two thousand, twenty-one".