111201202021121 has 8 divisors (see below), whose sum is σ = 117742668590304. Its totient is φ = 104659759828800.

The previous prime is 111201202021103. The next prime is 111201202021207. The reversal of 111201202021121 is 121120202102111.

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-111201202021121 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (17).

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 111201202021121.

It is not an unprimeable number, because it can be changed into a prime (111201202011121) 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, 3752186 + ... + 15377948.

It is an arithmetic number, because the mean of its divisors is an integer number (14717833573788).

Almost surely, 2^{111201202021121} is an apocalyptic number.

It is an amenable number.

111201202021121 is a deficient number, since it is larger than the sum of its proper divisors (6541466569183).

111201202021121 is a wasteful number, since it uses less digits than its factorization.

111201202021121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12188431.

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

Adding to 111201202021121 its reverse (121120202102111), we get a palindrome (232321404123232).

The spelling of 111201202021121 in words is "one hundred eleven trillion, two hundred one billion, two hundred two million, twenty-one thousand, one hundred twenty-one".