111021221022101 has 8 divisors (see below), whose sum is σ = 119670304310424. Its totient is φ = 102387707642880.

The previous prime is 111021221022071. The next prime is 111021221022113. The reversal of 111021221022101 is 101220122120111.

It can be written as a sum of positive squares in 4 ways, for example, as 9966655314001 + 101054565708100 = 3157001^2 + 10052590^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-111021221022101 is a prime.

It is a super-2 number, since 2×111021221022101² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 111021221022101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111021221022401) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3892462460 + ... + 3892490981.

It is an arithmetic number, because the mean of its divisors is an integer number (14958788038803).

Almost surely, 2^{111021221022101} is an apocalyptic number.

It is an amenable number.

111021221022101 is a deficient number, since it is larger than the sum of its proper divisors (8649083288323).

111021221022101 is a wasteful number, since it uses less digits than its factorization.

111021221022101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7784954551.

The product of its (nonzero) digits is 32, while the sum is 17.

Adding to 111021221022101 its reverse (101220122120111), we get a palindrome (212241343142212).

The spelling of 111021221022101 in words is "one hundred eleven trillion, twenty-one billion, two hundred twenty-one million, twenty-two thousand, one hundred one".