2121200211099 has 4 divisors (see below), whose sum is σ = 2828266948136. Its totient is φ = 1414133474064.

The previous prime is 2121200211077. The next prime is 2121200211101. The reversal of 2121200211099 is 9901120021212.

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

It is not a de Polignac number, because 2121200211099 - 2¹⁶ = 2121200145563 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2121200211899) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 353533368514 + ... + 353533368519.

It is an arithmetic number, because the mean of its divisors is an integer number (707066737034).

Almost surely, 2^{2121200211099} is an apocalyptic number.

2121200211099 is a deficient number, since it is larger than the sum of its proper divisors (707066737037).

2121200211099 is an equidigital number, since it uses as much as digits as its factorization.

2121200211099 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 707066737036.

The product of its (nonzero) digits is 1296, while the sum is 30.

The spelling of 2121200211099 in words is "two trillion, one hundred twenty-one billion, two hundred million, two hundred eleven thousand, ninety-nine".