211100210021001 has 24 divisors (see below), whose sum is σ = 327421380608640. Its totient is φ = 120628453183392.

The previous prime is 211100210020877. The next prime is 211100210021009. The reversal of 211100210021001 is 100120012001112.

It is not a de Polignac number, because 211100210021001 - 2⁷ = 211100210020873 is a prime.

It is a super-2 number, since 2×211100210021001² (a number of 29 digits) contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (211100210021009) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 95896255 + ... + 98072891.

It is an arithmetic number, because the mean of its divisors is an integer number (13642557525360).

Almost surely, 2^{211100210021001} is an apocalyptic number.

211100210021001 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

211100210021001 is a deficient number, since it is larger than the sum of its proper divisors (116321170587639).

211100210021001 is a wasteful number, since it uses less digits than its factorization.

211100210021001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2836413 (or 2836406 counting only the distinct ones).

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

Adding to 211100210021001 its reverse (100120012001112), we get a palindrome (311220222022113).

The spelling of 211100210021001 in words is "two hundred eleven trillion, one hundred billion, two hundred ten million, twenty-one thousand, one".