210201201121 has 2 divisors, whose sum is σ = 210201201122. Its totient is φ = 210201201120.

The previous prime is 210201201101. The next prime is 210201201131. The reversal of 210201201121 is 121102102012.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 168966213025 + 41234988096 = 411055^2 + 203064^2 .

It is a cyclic number.

It is not a de Polignac number, because 210201201121 - 2²⁹ = 209664330209 is a prime.

It is a super-2 number, since 2×210201201121² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (210201201101) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105100600560 + 105100600561.

It is an arithmetic number, because the mean of its divisors is an integer number (105100600561).

Almost surely, 2^210201201121 is an apocalyptic number.

It is an amenable number.

210201201121 is a deficient number, since it is larger than the sum of its proper divisors (1).

210201201121 is an equidigital number, since it uses as much as digits as its factorization.

210201201121 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 210201201121 its reverse (121102102012), we get a palindrome (331303303133).

The spelling of 210201201121 in words is "two hundred ten billion, two hundred one million, two hundred one thousand, one hundred twenty-one".