111220101021101 has 2 divisors, whose sum is σ = 111220101021102. Its totient is φ = 111220101021100.

The previous prime is 111220101021053. The next prime is 111220101021143. The reversal of 111220101021101 is 101120101022111.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 88666140712900 + 22553960308201 = 9416270^2 + 4749101^2 .

It is an emirp because it is prime and its reverse (101120101022111) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 111220101021101 - 2¹⁴ = 111220101004717 is a prime.

It is a super-2 number, since 2×111220101021101² (a number of 29 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (111220101021401) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55610050510550 + 55610050510551.

It is an arithmetic number, because the mean of its divisors is an integer number (55610050510551).

Almost surely, 2^{111220101021101} is an apocalyptic number.

It is an amenable number.

111220101021101 is a deficient number, since it is larger than the sum of its proper divisors (1).

111220101021101 is an equidigital number, since it uses as much as digits as its factorization.

111220101021101 is an evil number, because the sum of its binary digits is even.

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

Adding to 111220101021101 its reverse (101120101022111), we get a palindrome (212340202043212).

It can be divided in two parts, 1112201010 and 21101, that added together give a palindrome (1112222111).

The spelling of 111220101021101 in words is "one hundred eleven trillion, two hundred twenty billion, one hundred one million, twenty-one thousand, one hundred one".