121100121121 has 8 divisors (see below), whose sum is σ = 138468432960. Its totient is φ = 103748882928.

The previous prime is 121100121113. The next prime is 121100121133. The reversal of 121100121121 is 121121001121.

It is a happy number.

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 121100121121 - 2³ = 121100121113 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121100121101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4253206 + ... + 4281583.

It is an arithmetic number, because the mean of its divisors is an integer number (17308554120).

Almost surely, 2^121100121121 is an apocalyptic number.

It is an amenable number.

121100121121 is a deficient number, since it is larger than the sum of its proper divisors (17368311839).

121100121121 is an equidigital number, since it uses as much as digits as its factorization.

121100121121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8536823.

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 121100121121 its reverse (121121001121), we get a palindrome (242221122242).

The spelling of 121100121121 in words is "one hundred twenty-one billion, one hundred million, one hundred twenty-one thousand, one hundred twenty-one".