20211112012211 has 4 divisors (see below), whose sum is σ = 20252275173624. Its totient is φ = 20169948850800.

The previous prime is 20211112012183. The next prime is 20211112012243. The reversal of 20211112012211 is 11221021111202.

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 20211112012211 - 2³⁴ = 20193932143027 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 20211112012211.

It is not an unprimeable number, because it can be changed into a prime (20211112012111) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20581579970 + ... + 20581580951.

It is an arithmetic number, because the mean of its divisors is an integer number (5063068793406).

Almost surely, 2^{20211112012211} is an apocalyptic number.

20211112012211 is a deficient number, since it is larger than the sum of its proper divisors (41163161413).

20211112012211 is an equidigital number, since it uses as much as digits as its factorization.

20211112012211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41163161412.

The product of its (nonzero) digits is 32, while the sum is 17.

Adding to 20211112012211 its reverse (11221021111202), we get a palindrome (31432133123413).

The spelling of 20211112012211 in words is "twenty trillion, two hundred eleven billion, one hundred twelve million, twelve thousand, two hundred eleven".