121100516201 has 32 divisors (see below), whose sum is σ = 152172134400. Its totient is φ = 94024203840.

The previous prime is 121100516189. The next prime is 121100516203. The reversal of 121100516201 is 102615001121.

It is not a de Polignac number, because 121100516201 - 2²⁶ = 121033407337 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121100516203) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 244856 + ... + 549686.

It is an arithmetic number, because the mean of its divisors is an integer number (4755379200).

Almost surely, 2^121100516201 is an apocalyptic number.

It is an amenable number.

121100516201 is a deficient number, since it is larger than the sum of its proper divisors (31071618199).

121100516201 is a wasteful number, since it uses less digits than its factorization.

121100516201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 304989.

The product of its (nonzero) digits is 120, while the sum is 20.

Adding to 121100516201 its reverse (102615001121), we get a palindrome (223715517322).

The spelling of 121100516201 in words is "one hundred twenty-one billion, one hundred million, five hundred sixteen thousand, two hundred one".