121002120002 has 16 divisors (see below), whose sum is σ = 182201545152. Its totient is φ = 60268694640.

The previous prime is 121002119999. The next prime is 121002120007. The reversal of 121002120002 is 200021200121.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (121002120007) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 469883 + ... + 680289.

It is an arithmetic number, because the mean of its divisors is an integer number (11387596572).

Almost surely, 2^121002120002 is an apocalyptic number.

121002120002 is a deficient number, since it is larger than the sum of its proper divisors (61199425150).

121002120002 is a wasteful number, since it uses less digits than its factorization.

121002120002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 211513.

The product of its (nonzero) digits is 16, while the sum is 11.

Adding to 121002120002 its reverse (200021200121), we get a palindrome (321023320123).

The spelling of 121002120002 in words is "one hundred twenty-one billion, two million, one hundred twenty thousand, two".