20210211099 has 192 divisors, whose sum is σ = 37645171200. Its totient is φ = 10691315712.

The previous prime is 20210211059. The next prime is 20210211121. The reversal of 20210211099 is 99011201202.

It is not a de Polignac number, because 20210211099 - 2¹¹ = 20210209051 is a prime.

It is a super-2 number, since 2×20210211099² (a number of 21 digits) contains 22 as substring.

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 (20210211029) 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 191 ways as a sum of consecutive naturals, for example, 29590012 + ... + 29590694.

It is an arithmetic number, because the mean of its divisors is an integer number (196068600).

Almost surely, 2^20210211099 is an apocalyptic number.

20210211099 is a gapful number since it is divisible by the number (29) formed by its first and last digit.

20210211099 is a deficient number, since it is larger than the sum of its proper divisors (17434960101).

20210211099 is a wasteful number, since it uses less digits than its factorization.

20210211099 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 776 (or 764 counting only the distinct ones).

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

The spelling of 20210211099 in words is "twenty billion, two hundred ten million, two hundred eleven thousand, ninety-nine".