111222021101101 has 4 divisors (see below), whose sum is σ = 112242406615900. Its totient is φ = 110201635586304.

The previous prime is 111222021101071. The next prime is 111222021101117. The reversal of 111222021101101 is 101101120222111.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 57760684002025 + 53461337099076 = 7600045^2 + 7311726^2 .

It is a cyclic number.

It is not a de Polignac number, because 111222021101101 - 2²⁵ = 111221987546669 is a prime.

It is a super-2 number, since 2×111222021101101² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111222021101201) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 510192757236 + ... + 510192757453.

It is an arithmetic number, because the mean of its divisors is an integer number (28060601653975).

Almost surely, 2^{111222021101101} is an apocalyptic number.

It is an amenable number.

111222021101101 is a deficient number, since it is larger than the sum of its proper divisors (1020385514799).

111222021101101 is a wasteful number, since it uses less digits than its factorization.

111222021101101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1020385514798.

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

Adding to 111222021101101 its reverse (101101120222111), we get a palindrome (212323141323212).

The spelling of 111222021101101 in words is "one hundred eleven trillion, two hundred twenty-two billion, twenty-one million, one hundred one thousand, one hundred one".