121102100200221 has 32 divisors (see below), whose sum is σ = 189734980141056. Its totient is φ = 67264239024000.

The previous prime is 121102100200189. The next prime is 121102100200223. The reversal of 121102100200221 is 122002001201121.

It is not a de Polignac number, because 121102100200221 - 2⁵ = 121102100200189 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 121102100200221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121102100200223) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 259273765 + ... + 259740426.

It is an arithmetic number, because the mean of its divisors is an integer number (5929218129408).

Almost surely, 2^{121102100200221} is an apocalyptic number.

It is an amenable number.

121102100200221 is a deficient number, since it is larger than the sum of its proper divisors (68632879940835).

121102100200221 is a wasteful number, since it uses less digits than its factorization.

121102100200221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 519014513.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 121102100200221 its reverse (122002001201121), we get a palindrome (243104101401342).

The spelling of 121102100200221 in words is "one hundred twenty-one trillion, one hundred two billion, one hundred million, two hundred thousand, two hundred twenty-one".