121102100201 has 12 divisors (see below), whose sum is σ = 131782482300. Its totient is φ = 111198474240.

The previous prime is 121102100143. The next prime is 121102100213. The reversal of 121102100201 is 102001201121.

It can be written as a sum of positive squares in 6 ways, for example, as 3488083600 + 117614016601 = 59060^2 + 342949^2 .

It is a de Polignac number, because none of the positive numbers 2^k-121102100201 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121102102201) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5098376 + ... + 5122073.

It is an arithmetic number, because the mean of its divisors is an integer number (10981873525).

Almost surely, 2^121102100201 is an apocalyptic number.

It is an amenable number.

121102100201 is a deficient number, since it is larger than the sum of its proper divisors (10680382099).

121102100201 is a wasteful number, since it uses less digits than its factorization.

121102100201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10220524 (or 10220507 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 121102100201 its reverse (102001201121), we get a palindrome (223103301322).

The spelling of 121102100201 in words is "one hundred twenty-one billion, one hundred two million, one hundred thousand, two hundred one".