111022211221081 has 2 divisors, whose sum is σ = 111022211221082. Its totient is φ = 111022211221080.

The previous prime is 111022211221069. The next prime is 111022211221093. The reversal of 111022211221081 is 180122112220111.

It is a happy number.

It is a balanced prime because it is at equal distance from previous prime (111022211221069) and next prime (111022211221093).

It can be written as a sum of positive squares in only one way, i.e., 104710605152400 + 6311606068681 = 10232820^2 + 2512291^2 .

It is a cyclic number.

It is not a de Polignac number, because 111022211221081 - 2¹⁷ = 111022211090009 is a prime.

It is a super-2 number, since 2×111022211221081² (a number of 29 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (111022211221781) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55511105610540 + 55511105610541.

It is an arithmetic number, because the mean of its divisors is an integer number (55511105610541).

Almost surely, 2^{111022211221081} is an apocalyptic number.

It is an amenable number.

111022211221081 is a deficient number, since it is larger than the sum of its proper divisors (1).

111022211221081 is an equidigital number, since it uses as much as digits as its factorization.

111022211221081 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 256, while the sum is 25.

Adding to 111022211221081 its reverse (180122112220111), we get a palindrome (291144323441192).

The spelling of 111022211221081 in words is "one hundred eleven trillion, twenty-two billion, two hundred eleven million, two hundred twenty-one thousand, eighty-one".