22011011111021 has 2 divisors, whose sum is σ = 22011011111022. Its totient is φ = 22011011111020.

The previous prime is 22011011111003. The next prime is 22011011111059. The reversal of 22011011111021 is 12011111011022.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 16614705340996 + 5396305770025 = 4076114^2 + 2322995^2 .

It is a cyclic number.

It is not a de Polignac number, because 22011011111021 - 2³⁰ = 22009937369197 is a prime.

It is a super-2 number, since 2×22011011111021² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 22011011110987 and 22011011111005.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22011011116021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11005505555510 + 11005505555511.

It is an arithmetic number, because the mean of its divisors is an integer number (11005505555511).

Almost surely, 2^{22011011111021} is an apocalyptic number.

It is an amenable number.

22011011111021 is a deficient number, since it is larger than the sum of its proper divisors (1).

22011011111021 is an equidigital number, since it uses as much as digits as its factorization.

22011011111021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8, while the sum is 14.

Adding to 22011011111021 its reverse (12011111011022), we get a palindrome (34022122122043).

Subtracting from 22011011111021 its reverse (12011111011022), we obtain a palindrome (9999900099999).

The spelling of 22011011111021 in words is "twenty-two trillion, eleven billion, eleven million, one hundred eleven thousand, twenty-one".