121102001111001 has 16 divisors (see below), whose sum is σ = 166687725404160. Its totient is φ = 78125775311760.

The previous prime is 121102001110973. The next prime is 121102001111023. The reversal of 121102001111001 is 100111100201121.

It is not a de Polignac number, because 121102001111001 - 2¹⁰ = 121102001109977 is a prime.

It is not an unprimeable number, because it can be changed into a prime (121102001115001) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 36293271 + ... + 39489308.

It is an arithmetic number, because the mean of its divisors is an integer number (10417982837760).

Almost surely, 2^{121102001111001} is an apocalyptic number.

It is an amenable number.

121102001111001 is a deficient number, since it is larger than the sum of its proper divisors (45585724293159).

121102001111001 is a wasteful number, since it uses less digits than its factorization.

121102001111001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75799796.

The product of its (nonzero) digits is 4, while the sum is 12.

Adding to 121102001111001 its reverse (100111100201121), we get a palindrome (221213101312122).

The spelling of 121102001111001 in words is "one hundred twenty-one trillion, one hundred two billion, one million, one hundred eleven thousand, one".