121002002011 has 4 divisors (see below), whose sum is σ = 132002184024. Its totient is φ = 110001820000.

The previous prime is 121002001937. The next prime is 121002002027. The reversal of 121002002011 is 110200200121.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 121002002011 - 2¹⁷ = 121001870939 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121002002311) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5500090990 + ... + 5500091011.

It is an arithmetic number, because the mean of its divisors is an integer number (33000546006).

Almost surely, 2^121002002011 is an apocalyptic number.

121002002011 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

121002002011 is a deficient number, since it is larger than the sum of its proper divisors (11000182013).

121002002011 is a wasteful number, since it uses less digits than its factorization.

121002002011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11000182012.

The product of its (nonzero) digits is 8, while the sum is 10.

Adding to 121002002011 its reverse (110200200121), we get a palindrome (231202202132).

The spelling of 121002002011 in words is "one hundred twenty-one billion, two million, two thousand, eleven".