111022210121 has 2 divisors, whose sum is σ = 111022210122. Its totient is φ = 111022210120.

The previous prime is 111022209997. The next prime is 111022210129. The reversal of 111022210121 is 121012220111.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 92820152896 + 18202057225 = 304664^2 + 134915^2 .

It is a cyclic number.

It is not a de Polignac number, because 111022210121 - 2²² = 111018015817 is a prime.

It is a super-2 number, since 2×111022210121² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 111022210096 and 111022210105.

It is not a weakly prime, because it can be changed into another prime (111022210129) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55511105060 + 55511105061.

It is an arithmetic number, because the mean of its divisors is an integer number (55511105061).

Almost surely, 2^111022210121 is an apocalyptic number.

It is an amenable number.

111022210121 is a deficient number, since it is larger than the sum of its proper divisors (1).

111022210121 is an equidigital number, since it uses as much as digits as its factorization.

111022210121 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 111022210121 its reverse (121012220111), we get a palindrome (232034430232).

The spelling of 111022210121 in words is "one hundred eleven billion, twenty-two million, two hundred ten thousand, one hundred twenty-one".