201121121122102 has 4 divisors (see below), whose sum is σ = 301681681683156. Its totient is φ = 100560560561050.

The previous prime is 201121121122049. The next prime is 201121121122177. The reversal of 201121121122102 is 201221121121102.

It is a happy number.

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

It is a super-2 number, since 2×201121121122102² (a number of 29 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 201121121122102.

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 50280280280524 + ... + 50280280280527.

It is an arithmetic number, because the mean of its divisors is an integer number (75420420420789).

Almost surely, 2^{201121121122102} is an apocalyptic number.

201121121122102 is a deficient number, since it is larger than the sum of its proper divisors (100560560561054).

201121121122102 is a wasteful number, since it uses less digits than its factorization.

201121121122102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100560560561053.

The product of its (nonzero) digits is 64, while the sum is 19.

Adding to 201121121122102 its reverse (201221121121102), we get a palindrome (402342242243204).

The spelling of 201121121122102 in words is "two hundred one trillion, one hundred twenty-one billion, one hundred twenty-one million, one hundred twenty-two thousand, one hundred two".