20201111211 has 16 divisors (see below), whose sum is σ = 27010692000. Its totient is φ = 13429506048.

The previous prime is 20201111207. The next prime is 20201111323. The reversal of 20201111211 is 11211110202.

It is not a de Polignac number, because 20201111211 - 2² = 20201111207 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20201110211) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3090795 + ... + 3097323.

It is an arithmetic number, because the mean of its divisors is an integer number (1688168250).

Almost surely, 2^20201111211 is an apocalyptic number.

20201111211 is a deficient number, since it is larger than the sum of its proper divisors (6809580789).

20201111211 is a wasteful number, since it uses less digits than its factorization.

20201111211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9278.

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 20201111211 its reverse (11211110202), we get a palindrome (31412221413).

The spelling of 20201111211 in words is "twenty billion, two hundred one million, one hundred eleven thousand, two hundred eleven".