121111211011001 has 8 divisors (see below), whose sum is σ = 121560518788800. Its totient is φ = 120662287097040.

The previous prime is 121111211010971. The next prime is 121111211011099. The reversal of 121111211011001 is 100110112111121.

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 121111211011001 - 2³⁸ = 120836333104057 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121111219011001) 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, 95333771 + ... + 96595808.

It is an arithmetic number, because the mean of its divisors is an integer number (15195064848600).

Almost surely, 2^{121111211011001} is an apocalyptic number.

It is an amenable number.

121111211011001 is a deficient number, since it is larger than the sum of its proper divisors (449307777799).

121111211011001 is a wasteful number, since it uses less digits than its factorization.

121111211011001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 191931919.

The product of its (nonzero) digits is 4, while the sum is 14.

Adding to 121111211011001 its reverse (100110112111121), we get a palindrome (221221323122122).

The spelling of 121111211011001 in words is "one hundred twenty-one trillion, one hundred eleven billion, two hundred eleven million, eleven thousand, one".