1200102002002 has 4 divisors (see below), whose sum is σ = 1800153003006. Its totient is φ = 600051001000.

The previous prime is 1200102001979. The next prime is 1200102002039. The reversal of 1200102002002 is 2002002010021.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 928276367841 + 271825634161 = 963471^2 + 521369^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 1200102002002.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 300025500499 + ... + 300025500502.

Almost surely, 2^{1200102002002} is an apocalyptic number.

1200102002002 is a deficient number, since it is larger than the sum of its proper divisors (600051001004).

1200102002002 is an equidigital number, since it uses as much as digits as its factorization.

1200102002002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 600051001003.

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

Adding to 1200102002002 its reverse (2002002010021), we get a palindrome (3202104012023).

The spelling of 1200102002002 in words is "one trillion, two hundred billion, one hundred two million, two thousand, two".