121121111102102 has 32 divisors (see below), whose sum is σ = 185848134607872. Its totient is φ = 59175926054784.

The previous prime is 121121111102071. The next prime is 121121111102119. The reversal of 121121111102102 is 201201111121121.

It is a super-2 number, since 2×121121111102102² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 885624158 + ... + 885760910.

It is an arithmetic number, because the mean of its divisors is an integer number (5807754206496).

Almost surely, 2^{121121111102102} is an apocalyptic number.

121121111102102 is a deficient number, since it is larger than the sum of its proper divisors (64727023505770).

121121111102102 is a wasteful number, since it uses less digits than its factorization.

121121111102102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 152012.

The product of its (nonzero) digits is 16, while the sum is 17.

Adding to 121121111102102 its reverse (201201111121121), we get a palindrome (322322222223223).

The spelling of 121121111102102 in words is "one hundred twenty-one trillion, one hundred twenty-one billion, one hundred eleven million, one hundred two thousand, one hundred two".