121201212102 has 16 divisors (see below), whose sum is σ = 243229739760. Its totient is φ = 40262518112.

The previous prime is 121201212049. The next prime is 121201212109. The reversal of 121201212102 is 201212102121.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121201212109) 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 7 ways as a sum of consecutive naturals, for example, 34469577 + ... + 34473092.

It is an arithmetic number, because the mean of its divisors is an integer number (15201858735).

Almost surely, 2^121201212102 is an apocalyptic number.

121201212102 is an abundant number, since it is smaller than the sum of its proper divisors (122028527658).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

121201212102 is a wasteful number, since it uses less digits than its factorization.

121201212102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68942967.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 121201212102 its reverse (201212102121), we get a palindrome (322413314223).

It can be divided in two parts, 121 and 201212102, that multiplied together give a palindrome (24346664342).

The spelling of 121201212102 in words is "one hundred twenty-one billion, two hundred one million, two hundred twelve thousand, one hundred two".