121000221111201 has 16 divisors (see below), whose sum is σ = 166539333058560. Its totient is φ = 78064005191760.

The previous prime is 121000221111071. The next prime is 121000221111221. The reversal of 121000221111201 is 102111122000121.

It is a happy number.

It is not a de Polignac number, because 121000221111201 - 2²⁵ = 121000187556769 is a prime.

It is not an unprimeable number, because it can be changed into a prime (121000221111221) 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 15 ways as a sum of consecutive naturals, for example, 5846256 + ... + 16618638.

It is an arithmetic number, because the mean of its divisors is an integer number (10408708316160).

Almost surely, 2^{121000221111201} is an apocalyptic number.

It is an amenable number.

121000221111201 is a deficient number, since it is larger than the sum of its proper divisors (45539111947359).

121000221111201 is a wasteful number, since it uses less digits than its factorization.

121000221111201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10893196.

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 121000221111201 its reverse (102111122000121), we get a palindrome (223111343111322).

The spelling of 121000221111201 in words is "one hundred twenty-one trillion, two hundred twenty-one million, one hundred eleven thousand, two hundred one".