121020200002 has 24 divisors (see below), whose sum is σ = 198514589940. Its totient is φ = 55302436800.

The previous prime is 121020199997. The next prime is 121020200023. The reversal of 121020200002 is 200002020121.

It can be written as a sum of positive squares in 6 ways, for example, as 46764495001 + 74255705001 = 216251^2 + 272499^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1738377 + ... + 1806652.

Almost surely, 2^121020200002 is an apocalyptic number.

121020200002 is a deficient number, since it is larger than the sum of its proper divisors (77494389938).

121020200002 is a wasteful number, since it uses less digits than its factorization.

121020200002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3545158 (or 3545145 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 10.

Adding to 121020200002 its reverse (200002020121), we get a palindrome (321022220123).

The spelling of 121020200002 in words is "one hundred twenty-one billion, twenty million, two hundred thousand, two".