2121021002099 has 8 divisors (see below), whose sum is σ = 2234051748240. Its totient is φ = 2008130062176.

The previous prime is 2121021002077. The next prime is 2121021002101. The reversal of 2121021002099 is 9902001201212.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-2121021002099 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2121021002029) by changing a digit.

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 in 7 ways as a sum of consecutive naturals, for example, 34920404 + ... + 34981089.

It is an arithmetic number, because the mean of its divisors is an integer number (279256468530).

Almost surely, 2^{2121021002099} is an apocalyptic number.

2121021002099 is a deficient number, since it is larger than the sum of its proper divisors (113030746141).

2121021002099 is a wasteful number, since it uses less digits than its factorization.

2121021002099 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69903109.

The product of its (nonzero) digits is 1296, while the sum is 29.

The spelling of 2121021002099 in words is "two trillion, one hundred twenty-one billion, twenty-one million, two thousand, ninety-nine".