121111112201201 has 8 divisors (see below), whose sum is σ = 126502062322560. Its totient is φ = 115730599545792.

The previous prime is 121111112201159. The next prime is 121111112201329. The reversal of 121111112201201 is 102102211111121.

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 121111112201201 - 2²² = 121111108006897 is a prime.

It is a super-2 number, since 2×121111112201201² (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 121111112201201.

It is not an unprimeable number, because it can be changed into a prime (121111112501201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2609342765 + ... + 2609389178.

It is an arithmetic number, because the mean of its divisors is an integer number (15812757790320).

Almost surely, 2^{121111112201201} is an apocalyptic number.

It is an amenable number.

121111112201201 is a deficient number, since it is larger than the sum of its proper divisors (5390950121359).

121111112201201 is a wasteful number, since it uses less digits than its factorization.

121111112201201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5218732975.

The product of its (nonzero) digits is 16, while the sum is 17.

Adding to 121111112201201 its reverse (102102211111121), we get a palindrome (223213323312322).

The spelling of 121111112201201 in words is "one hundred twenty-one trillion, one hundred eleven billion, one hundred twelve million, two hundred one thousand, two hundred one".