121202210202101 has 16 divisors (see below), whose sum is σ = 138701625194496. Its totient is φ = 103749077719296.

The previous prime is 121202210202091. The next prime is 121202210202119. The reversal of 121202210202101 is 101202012202121.

It is a cyclic number.

It is not a de Polignac number, because 121202210202101 - 2¹⁸ = 121202209939957 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 121202210202101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121202210202181) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15095795 + ... + 21686111.

It is an arithmetic number, because the mean of its divisors is an integer number (8668851574656).

Almost surely, 2^{121202210202101} is an apocalyptic number.

It is an amenable number.

121202210202101 is a deficient number, since it is larger than the sum of its proper divisors (17499414992395).

121202210202101 is a wasteful number, since it uses less digits than its factorization.

121202210202101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6593828.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 121202210202101 its reverse (101202012202121), we get a palindrome (222404222404222).

The spelling of 121202210202101 in words is "one hundred twenty-one trillion, two hundred two billion, two hundred ten million, two hundred two thousand, one hundred one".