211121200111001 has 8 divisors (see below), whose sum is σ = 211170128527680. Its totient is φ = 211072272681168.

The previous prime is 211121200110851. The next prime is 211121200111061. The reversal of 211121200111001 is 100111002121112.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 211121200111001 - 2¹⁰ = 211121200109977 is a prime.

It is a super-4 number, since 4×211121200111001⁴ (a number of 58 digits) contains 4444 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (211121200111061) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 588497255 + ... + 588855891.

It is an arithmetic number, because the mean of its divisors is an integer number (26396266065960).

Almost surely, 2^{211121200111001} is an apocalyptic number.

It is an amenable number.

211121200111001 is a deficient number, since it is larger than the sum of its proper divisors (48928416679).

211121200111001 is a wasteful number, since it uses less digits than its factorization.

211121200111001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 493423.

The product of its (nonzero) digits is 8, while the sum is 14.

Adding to 211121200111001 its reverse (100111002121112), we get a palindrome (311232202232113).

The spelling of 211121200111001 in words is "two hundred eleven trillion, one hundred twenty-one billion, two hundred million, one hundred eleven thousand, one".