202010121099 has 32 divisors (see below), whose sum is σ = 309096311040. Its totient is φ = 130312034496.

The previous prime is 202010121029. The next prime is 202010121121. The reversal of 202010121099 is 990121010202.

It is not a de Polignac number, because 202010121099 - 2¹⁶ = 202010055563 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (202010121029) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 688842 + ... + 937295.

It is an arithmetic number, because the mean of its divisors is an integer number (9659259720).

Almost surely, 2^202010121099 is an apocalyptic number.

202010121099 is a deficient number, since it is larger than the sum of its proper divisors (107086189941).

202010121099 is a wasteful number, since it uses less digits than its factorization.

202010121099 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1626296 (or 1626290 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 27.

The spelling of 202010121099 in words is "two hundred two billion, ten million, one hundred twenty-one thousand, ninety-nine".