121111021122001 has 8 divisors (see below), whose sum is σ = 128041989699200. Its totient is φ = 114235722975600.

The previous prime is 121111021121989. The next prime is 121111021122011. The reversal of 121111021122001 is 100221120111121.

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

It is not a de Polignac number, because 121111021122001 - 2²³ = 121111012733393 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121111021122011) 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, 13917603225 + ... + 13917611926.

It is an arithmetic number, because the mean of its divisors is an integer number (16005248712400).

Almost surely, 2^{121111021122001} is an apocalyptic number.

It is an amenable number.

121111021122001 is a deficient number, since it is larger than the sum of its proper divisors (6930968577199).

121111021122001 is a wasteful number, since it uses less digits than its factorization.

121111021122001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27835215399.

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

Adding to 121111021122001 its reverse (100221120111121), we get a palindrome (221332141233122).

The spelling of 121111021122001 in words is "one hundred twenty-one trillion, one hundred eleven billion, twenty-one million, one hundred twenty-two thousand, one".