111221202010121 has 8 divisors (see below), whose sum is σ = 127755173304000. Its totient is φ = 94848537753648.

The previous prime is 111221202010111. The next prime is 111221202010147. The reversal of 111221202010121 is 121010202122111.

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

It is a de Polignac number, because none of the positive numbers 2^k-111221202010121 is a prime.

It is a super-2 number, since 2×111221202010121² (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 111221202010121.

It is not an unprimeable number, because it can be changed into a prime (111221202010111) 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, 40326757871 + ... + 40326760628.

It is an arithmetic number, because the mean of its divisors is an integer number (15969396663000).

Almost surely, 2^{111221202010121} is an apocalyptic number.

It is an amenable number.

111221202010121 is a deficient number, since it is larger than the sum of its proper divisors (16533971293879).

111221202010121 is an equidigital number, since it uses as much as digits as its factorization.

111221202010121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80653518703.

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

Adding to 111221202010121 its reverse (121010202122111), we get a palindrome (232231404132232).

The spelling of 111221202010121 in words is "one hundred eleven trillion, two hundred twenty-one billion, two hundred two million, ten thousand, one hundred twenty-one".