121210120002 has 32 divisors (see below), whose sum is σ = 245350526400. Its totient is φ = 39916459008.

The previous prime is 121210119983. The next prime is 121210120007. The reversal of 121210120002 is 200021012121.

It is a self number, because there is not a number n which added to its sum of digits gives 121210120002.

It is not an unprimeable number, because it can be changed into a prime (121210120007) 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 15 ways as a sum of consecutive naturals, for example, 148149 + ... + 514167.

It is an arithmetic number, because the mean of its divisors is an integer number (7667203950).

Almost surely, 2^121210120002 is an apocalyptic number.

121210120002 is an abundant number, since it is smaller than the sum of its proper divisors (124140406398).

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

121210120002 is a wasteful number, since it uses less digits than its factorization.

121210120002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 366690.

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 121210120002 its reverse (200021012121), we get a palindrome (321231132123).

The spelling of 121210120002 in words is "one hundred twenty-one billion, two hundred ten million, one hundred twenty thousand, two".