202120121099 has 16 divisors (see below), whose sum is σ = 220795787520. Its totient is φ = 183892789920.

The previous prime is 202120121059. The next prime is 202120121101. The reversal of 202120121099 is 990121021202.

202120121099 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 202120121099 - 2¹⁶ = 202120055563 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (202120121059) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3459044 + ... + 3516990.

It is an arithmetic number, because the mean of its divisors is an integer number (13799736720).

Almost surely, 2^202120121099 is an apocalyptic number.

202120121099 is a deficient number, since it is larger than the sum of its proper divisors (18675666421).

202120121099 is a wasteful number, since it uses less digits than its factorization.

202120121099 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61810.

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

The spelling of 202120121099 in words is "two hundred two billion, one hundred twenty million, one hundred twenty-one thousand, ninety-nine".