211121100000201 has 4 divisors (see below), whose sum is σ = 281494800000272. Its totient is φ = 140747400000132.

The previous prime is 211121100000163. The next prime is 211121100000257. The reversal of 211121100000201 is 102000001121112.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 211121100000201 - 2¹⁷ = 211121099869129 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (211121100000001) 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, 35186850000031 + ... + 35186850000036.

It is an arithmetic number, because the mean of its divisors is an integer number (70373700000068).

Almost surely, 2^{211121100000201} is an apocalyptic number.

It is an amenable number.

211121100000201 is a deficient number, since it is larger than the sum of its proper divisors (70373700000071).

211121100000201 is an equidigital number, since it uses as much as digits as its factorization.

211121100000201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70373700000070.

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

Adding to 211121100000201 its reverse (102000001121112), we get a palindrome (313121101121313).

The spelling of 211121100000201 in words is "two hundred eleven trillion, one hundred twenty-one billion, one hundred million, two hundred one", and thus it is an aban number.