201121102106 has 8 divisors (see below), whose sum is σ = 304351402644. Its totient is φ = 99670634560.

The previous prime is 201121102103. The next prime is 201121102129. The reversal of 201121102106 is 601201121102.

201121102106 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 200248195081 + 872907025 = 447491^2 + 29545^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (201121102103) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 444957965 + ... + 444958416.

Almost surely, 2^201121102106 is an apocalyptic number.

201121102106 is a deficient number, since it is larger than the sum of its proper divisors (103230300538).

201121102106 is a wasteful number, since it uses less digits than its factorization.

201121102106 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 889916496.

The product of its (nonzero) digits is 48, while the sum is 17.

Adding to 201121102106 its reverse (601201121102), we get a palindrome (802322223208).

The spelling of 201121102106 in words is "two hundred one billion, one hundred twenty-one million, one hundred two thousand, one hundred six".