2100121010002 has 4 divisors (see below), whose sum is σ = 3150181515006. Its totient is φ = 1050060505000.

The previous prime is 2100121009999. The next prime is 2100121010077. The reversal of 2100121010002 is 2000101210012.

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., 2019522367801 + 80598642201 = 1421099^2 + 283899^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 525030252499 + ... + 525030252502.

Almost surely, 2^{2100121010002} is an apocalyptic number.

2100121010002 is a deficient number, since it is larger than the sum of its proper divisors (1050060505004).

2100121010002 is a wasteful number, since it uses less digits than its factorization.

2100121010002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1050060505003.

The product of its (nonzero) digits is 8, while the sum is 10.

Adding to 2100121010002 its reverse (2000101210012), we get a palindrome (4100222220014).

The spelling of 2100121010002 in words is "two trillion, one hundred billion, one hundred twenty-one million, ten thousand, two".