210201101211121 has 12 divisors (see below), whose sum is σ = 220592645499492. Its totient is φ = 200279580655616.

The previous prime is 210201101211119. The next prime is 210201101211139. The reversal of 210201101211121 is 121112101102012.

It can be written as a sum of positive squares in 2 ways, for example, as 189055487565025 + 21145613646096 = 13749745^2 + 4598436^2 .

It is not a de Polignac number, because 210201101211121 - 2¹ = 210201101211119 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 210201101211095 and 210201101211104.

It is not an unprimeable number, because it can be changed into a prime (210201101211151) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 772929376 + ... + 773201281.

It is an arithmetic number, because the mean of its divisors is an integer number (18382720458291).

Almost surely, 2^{210201101211121} is an apocalyptic number.

It is an amenable number.

210201101211121 is a deficient number, since it is larger than the sum of its proper divisors (10391544288371).

210201101211121 is a wasteful number, since it uses less digits than its factorization.

210201101211121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1546130960 (or 1546130937 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 16.

Adding to 210201101211121 its reverse (121112101102012), we get a palindrome (331313202313133).

The spelling of 210201101211121 in words is "two hundred ten trillion, two hundred one billion, one hundred one million, two hundred eleven thousand, one hundred twenty-one".