111021020202121 has 8 divisors (see below), whose sum is σ = 113880662123360. Its totient is φ = 108174003632352.

The previous prime is 111021020202109. The next prime is 111021020202133. The reversal of 111021020202121 is 121202020120111.

It is an interprime number because it is at equal distance from previous prime (111021020202109) and next prime (111021020202133).

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

It is a cyclic number.

It is not a de Polignac number, because 111021020202121 - 2¹³ = 111021020193929 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 111021020202095 and 111021020202104.

It is not an unprimeable number, because it can be changed into a prime (111021020202101) 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, 3156320055 + ... + 3156355228.

It is an arithmetic number, because the mean of its divisors is an integer number (14235082765420).

Almost surely, 2^{111021020202121} is an apocalyptic number.

It is an amenable number.

111021020202121 is a deficient number, since it is larger than the sum of its proper divisors (2859641921239).

111021020202121 is an equidigital number, since it uses as much as digits as its factorization.

111021020202121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6312675735.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 111021020202121 its reverse (121202020120111), we get a palindrome (232223040322232).

The spelling of 111021020202121 in words is "one hundred eleven trillion, twenty-one billion, twenty million, two hundred two thousand, one hundred twenty-one".