121002000002 has 16 divisors (see below), whose sum is σ = 206962697592. Its totient is φ = 52561954560.

The previous prime is 121001999981. The next prime is 121002000037. The reversal of 121002000002 is 200000200121.

It can be written as a sum of positive squares in 4 ways, for example, as 70920483481 + 50081516521 = 266309^2 + 223789^2 .

It is an unprimeable number.

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, 136879649 + ... + 136880532.

Almost surely, 2^121002000002 is an apocalyptic number.

121002000002 is a deficient number, since it is larger than the sum of its proper divisors (85960697590).

121002000002 is a wasteful number, since it uses less digits than its factorization.

121002000002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 273760213.

The product of its (nonzero) digits is 8, while the sum is 8.

Adding to 121002000002 its reverse (200000200121), we get a palindrome (321002200123).

It can be divided in two parts, 12100 and 2000002, that added together give a palindrome (2012102).

The spelling of 121002000002 in words is "one hundred twenty-one billion, two million, two", and thus it is an aban number.