211100121202111 has 4 divisors (see below), whose sum is σ = 211192023738672. Its totient is φ = 211008218665552.

The previous prime is 211100121202097. The next prime is 211100121202151. The reversal of 211100121202111 is 111202121001112.

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 211100121202111 - 2¹³ = 211100121193919 is a prime.

It is a super-2 number, since 2×211100121202111² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211100121202151) 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, 45951264835 + ... + 45951269428.

It is an arithmetic number, because the mean of its divisors is an integer number (52798005934668).

Almost surely, 2^{211100121202111} is an apocalyptic number.

211100121202111 is a deficient number, since it is larger than the sum of its proper divisors (91902536561).

211100121202111 is an equidigital number, since it uses as much as digits as its factorization.

211100121202111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 91902536560.

The product of its (nonzero) digits is 16, while the sum is 16.

Adding to 211100121202111 its reverse (111202121001112), we get a palindrome (322302242203223).

The spelling of 211100121202111 in words is "two hundred eleven trillion, one hundred billion, one hundred twenty-one million, two hundred two thousand, one hundred eleven".