211121033201 has 4 divisors (see below), whose sum is σ = 227361112692. Its totient is φ = 194880953712.

The previous prime is 211121033197. The next prime is 211121033203. The reversal of 211121033201 is 102330121112.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 136031880625 + 75089152576 = 368825^2 + 274024^2 .

It is a cyclic number.

It is not a de Polignac number, because 211121033201 - 2² = 211121033197 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 211121033201.

It is not an unprimeable number, because it can be changed into a prime (211121033203) 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, 8120039726 + ... + 8120039751.

It is an arithmetic number, because the mean of its divisors is an integer number (56840278173).

Almost surely, 2^211121033201 is an apocalyptic number.

It is an amenable number.

211121033201 is a deficient number, since it is larger than the sum of its proper divisors (16240079491).

211121033201 is a wasteful number, since it uses less digits than its factorization.

211121033201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16240079490.

The product of its (nonzero) digits is 72, while the sum is 17.

Adding to 211121033201 its reverse (102330121112), we get a palindrome (313451154313).

The spelling of 211121033201 in words is "two hundred eleven billion, one hundred twenty-one million, thirty-three thousand, two hundred one".