121102221102101 has 4 divisors (see below), whose sum is σ = 121143175525452. Its totient is φ = 121061266678752.

The previous prime is 121102221102053. The next prime is 121102221102167. The reversal of 121102221102101 is 101201122201121.

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 62784546268900 + 58317674833201 = 7923670^2 + 7636601^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-121102221102101 is a prime.

It is a super-2 number, since 2×121102221102101² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 121102221102101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121102221108101) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20477207240 + ... + 20477213153.

It is an arithmetic number, because the mean of its divisors is an integer number (30285793881363).

Almost surely, 2^{121102221102101} is an apocalyptic number.

It is an amenable number.

121102221102101 is a deficient number, since it is larger than the sum of its proper divisors (40954423351).

121102221102101 is an equidigital number, since it uses as much as digits as its factorization.

121102221102101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40954423350.

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

Adding to 121102221102101 its reverse (101201122201121), we get a palindrome (222303343303222).

The spelling of 121102221102101 in words is "one hundred twenty-one trillion, one hundred two billion, two hundred twenty-one million, one hundred two thousand, one hundred one".