211111210012101 has 32 divisors (see below), whose sum is σ = 332830304759040. Its totient is φ = 116459694038016.

The previous prime is 211111210012093. The next prime is 211111210012103. The reversal of 211111210012101 is 101210012111112.

It is not a de Polignac number, because 211111210012101 - 2³ = 211111210012093 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211111210012103) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 18406666 + ... + 27586731.

It is an arithmetic number, because the mean of its divisors is an integer number (10400947023720).

Almost surely, 2^{211111210012101} is an apocalyptic number.

211111210012101 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

211111210012101 is a deficient number, since it is larger than the sum of its proper divisors (121719094746939).

211111210012101 is a wasteful number, since it uses less digits than its factorization.

211111210012101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46000973.

The product of its (nonzero) digits is 8, while the sum is 15.

Adding to 211111210012101 its reverse (101210012111112), we get a palindrome (312321222123213).

The spelling of 211111210012101 in words is "two hundred eleven trillion, one hundred eleven billion, two hundred ten million, twelve thousand, one hundred one".