121100000001 has 48 divisors (see below), whose sum is σ = 173387874240. Its totient is φ = 75084307200.

The previous prime is 121099999981. The next prime is 121100000051. The reversal of 121100000001 is 100000001121.

It is a de Polignac number, because none of the positive numbers 2^k-121100000001 is a prime.

It is not an unprimeable number, because it can be changed into a prime (121100000051) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 12024370 + ... + 12034436.

It is an arithmetic number, because the mean of its divisors is an integer number (3612247380).

Almost surely, 2^121100000001 is an apocalyptic number.

It is an amenable number.

121100000001 is a deficient number, since it is larger than the sum of its proper divisors (52287874239).

121100000001 is a wasteful number, since it uses less digits than its factorization.

121100000001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10274 (or 10237 counting only the distinct ones).

The product of its (nonzero) digits is 2, while the sum is 6.

Adding to 121100000001 its reverse (100000001121), we get a palindrome (221100001122).

It can be divided in two parts, 121 and 100000001, that multiplied together give a palindrome (12100000121).

The spelling of 121100000001 in words is "one hundred twenty-one billion, one hundred million, one", and thus it is an aban number.