20210202211 has 4 divisors (see below), whose sum is σ = 20389053672. Its totient is φ = 20031350752.

The previous prime is 20210202179. The next prime is 20210202227. The reversal of 20210202211 is 11220201202.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 20210202211 - 2⁵ = 20210202179 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20210202191 and 20210202200.

It is not an unprimeable number, because it can be changed into a prime (20210202011) 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 3 ways as a sum of consecutive naturals, for example, 89425561 + ... + 89425786.

It is an arithmetic number, because the mean of its divisors is an integer number (5097263418).

Almost surely, 2^20210202211 is an apocalyptic number.

20210202211 is a deficient number, since it is larger than the sum of its proper divisors (178851461).

20210202211 is a wasteful number, since it uses less digits than its factorization.

20210202211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 178851460.

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 20210202211 its reverse (11220201202), we get a palindrome (31430403413).

The spelling of 20210202211 in words is "twenty billion, two hundred ten million, two hundred two thousand, two hundred eleven".