211012212020111 has 4 divisors (see below), whose sum is σ = 211012256049672. Its totient is φ = 211012167990552.

The previous prime is 211012212020101. The next prime is 211012212020173. The reversal of 211012212020111 is 111020212210112.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-211012212020111 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 211012212020111.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211012212020101) 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, 13805636 + ... + 24751161.

It is an arithmetic number, because the mean of its divisors is an integer number (52753064012418).

Almost surely, 2^{211012212020111} is an apocalyptic number.

211012212020111 is a deficient number, since it is larger than the sum of its proper divisors (44029561).

211012212020111 is an equidigital number, since it uses as much as digits as its factorization.

211012212020111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44029560.

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

Adding to 211012212020111 its reverse (111020212210112), we get a palindrome (322032424230223).

The spelling of 211012212020111 in words is "two hundred eleven trillion, twelve billion, two hundred twelve million, twenty thousand, one hundred eleven".