121102210122101 has 4 divisors (see below), whose sum is σ = 130417764746892. Its totient is φ = 111786655497312.

The previous prime is 121102210122097. The next prime is 121102210122137. The reversal of 121102210122101 is 101221012201121.

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

It can be written as a sum of positive squares in 2 ways, for example, as 17374299726001 + 103727910396100 = 4168249^2 + 10184690^2 .

It is a cyclic number.

It is not a de Polignac number, because 121102210122101 - 2² = 121102210122097 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 121102210122101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121102210142101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4657777312376 + ... + 4657777312401.

It is an arithmetic number, because the mean of its divisors is an integer number (32604441186723).

Almost surely, 2^{121102210122101} is an apocalyptic number.

It is an amenable number.

121102210122101 is a deficient number, since it is larger than the sum of its proper divisors (9315554624791).

121102210122101 is an equidigital number, since it uses as much as digits as its factorization.

121102210122101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9315554624790.

The product of its (nonzero) digits is 32, while the sum is 17.

Adding to 121102210122101 its reverse (101221012201121), we get a palindrome (222323222323222).

The spelling of 121102210122101 in words is "one hundred twenty-one trillion, one hundred two billion, two hundred ten million, one hundred twenty-two thousand, one hundred one".