211100020020001 has 8 divisors (see below), whose sum is σ = 242520292260864. Its totient is φ = 179995529410080.

The previous prime is 211100020019981. The next prime is 211100020020047. The reversal of 211100020020001 is 100020020001112.

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 211100020020001 - 2¹⁷ = 211100019888929 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 211100020020001.

It is not an unprimeable number, because it can be changed into a prime (211100020920001) 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, 78945406300 + ... + 78945408973.

It is an arithmetic number, because the mean of its divisors is an integer number (30315036532608).

Almost surely, 2^{211100020020001} is an apocalyptic number.

It is an amenable number.

211100020020001 is a deficient number, since it is larger than the sum of its proper divisors (31420272240863).

211100020020001 is a wasteful number, since it uses less digits than its factorization.

211100020020001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 157890815471.

The product of its (nonzero) digits is 8, while the sum is 10.

Adding to 211100020020001 its reverse (100020020001112), we get a palindrome (311120040021113).

The spelling of 211100020020001 in words is "two hundred eleven trillion, one hundred billion, twenty million, twenty thousand, one".