121111221020001 has 8 divisors (see below), whose sum is σ = 161492328612384. Its totient is φ = 80735463720480.

The previous prime is 121111221019993. The next prime is 121111221020033. The reversal of 121111221020001 is 100020122111121.

It is a happy number.

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

It is not a de Polignac number, because 121111221020001 - 2³ = 121111221019993 is a prime.

It is not an unprimeable number, because it can be changed into a prime (121111221020201) 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, 1337520396 + ... + 1337610941.

It is an arithmetic number, because the mean of its divisors is an integer number (20186541076548).

Almost surely, 2^{121111221020001} is an apocalyptic number.

It is an amenable number.

121111221020001 is a deficient number, since it is larger than the sum of its proper divisors (40381107592383).

121111221020001 is a wasteful number, since it uses less digits than its factorization.

121111221020001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2675146431.

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

Adding to 121111221020001 its reverse (100020122111121), we get a palindrome (221131343131122).

The spelling of 121111221020001 in words is "one hundred twenty-one trillion, one hundred eleven billion, two hundred twenty-one million, twenty thousand, one".