111011122022021 has 6 divisors (see below), whose sum is σ = 120207309645330. Its totient is φ = 102471804943248.

The previous prime is 111011122021999. The next prime is 111011122022089. The reversal of 111011122022021 is 120220221110111.

It can be written as a sum of positive squares in 3 ways, for example, as 60818464996 + 110950303557025 = 246614^2 + 10533295^2 .

It is not a de Polignac number, because 111011122022021 - 2²² = 111011117827717 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111011122022621) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 328435272086 + ... + 328435272423.

It is an arithmetic number, because the mean of its divisors is an integer number (20034551607555).

Almost surely, 2^{111011122022021} is an apocalyptic number.

It is an amenable number.

111011122022021 is a deficient number, since it is larger than the sum of its proper divisors (9196187623309).

111011122022021 is an equidigital number, since it uses as much as digits as its factorization.

111011122022021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 656870544535 (or 656870544522 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 17.

Adding to 111011122022021 its reverse (120220221110111), we get a palindrome (231231343132132).

The spelling of 111011122022021 in words is "one hundred eleven trillion, eleven billion, one hundred twenty-two million, twenty-two thousand, twenty-one".