121221020122102 has 8 divisors (see below), whose sum is σ = 183219557131512. Its totient is φ = 60147834411600.

The previous prime is 121221020122057. The next prime is 121221020122127. The reversal of 121221020122102 is 201221020122121.

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

It is a self number, because there is not a number n which added to its sum of digits gives 121221020122102.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (37) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 231337824399 + ... + 231337824922.

It is an arithmetic number, because the mean of its divisors is an integer number (22902444641439).

Almost surely, 2^{121221020122102} is an apocalyptic number.

121221020122102 is a deficient number, since it is larger than the sum of its proper divisors (61998537009410).

121221020122102 is a wasteful number, since it uses less digits than its factorization.

121221020122102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 462675649454.

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 121221020122102 its sum of digits (19), we get a palindrome (121221020122121).

Adding to 121221020122102 its reverse (201221020122121), we get a palindrome (322442040244223).

The spelling of 121221020122102 in words is "one hundred twenty-one trillion, two hundred twenty-one billion, twenty million, one hundred twenty-two thousand, one hundred two".