2002100121002 has 4 divisors (see below), whose sum is σ = 3003150181506. Its totient is φ = 1001050060500.

The previous prime is 2002100120941. The next prime is 2002100121011. The reversal of 2002100121002 is 2001210012002.

It is a happy number.

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., 1575378929881 + 426721191121 = 1255141^2 + 653239^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 500525030249 + ... + 500525030252.

Almost surely, 2^{2002100121002} is an apocalyptic number.

2002100121002 is a deficient number, since it is larger than the sum of its proper divisors (1001050060504).

2002100121002 is a wasteful number, since it uses less digits than its factorization.

2002100121002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1001050060503.

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

Adding to 2002100121002 its reverse (2001210012002), we get a palindrome (4003310133004).

The spelling of 2002100121002 in words is "two trillion, two billion, one hundred million, one hundred twenty-one thousand, two".