121211120020102 has 32 divisors (see below), whose sum is σ = 211164287616000. Its totient is φ = 51108820933248.

The previous prime is 121211120020097. The next prime is 121211120020117. The reversal of 121211120020102 is 201020021112121.

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, 193316227 + ... + 193942222.

It is an arithmetic number, because the mean of its divisors is an integer number (6598883988000).

Almost surely, 2^{121211120020102} is an apocalyptic number.

121211120020102 is a deficient number, since it is larger than the sum of its proper divisors (89953167595898).

121211120020102 is a wasteful number, since it uses less digits than its factorization.

121211120020102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 387258820.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 121211120020102 its reverse (201020021112121), we get a palindrome (322231141132223).

The spelling of 121211120020102 in words is "one hundred twenty-one trillion, two hundred eleven billion, one hundred twenty million, twenty thousand, one hundred two".