203212133320121 has 2 divisors, whose sum is σ = 203212133320122. Its totient is φ = 203212133320120.

The previous prime is 203212133320109. The next prime is 203212133320139. The reversal of 203212133320121 is 121023331212302.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 124658229852025 + 78553903468096 = 11165045^2 + 8863064^2 .

It is a cyclic number.

It is not a de Polignac number, because 203212133320121 - 2¹⁴ = 203212133303737 is a prime.

It is a super-2 number, since 2×203212133320121² (a number of 29 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (203212133320171) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 101606066660060 + 101606066660061.

It is an arithmetic number, because the mean of its divisors is an integer number (101606066660061).

Almost surely, 2^{203212133320121} is an apocalyptic number.

It is an amenable number.

203212133320121 is a deficient number, since it is larger than the sum of its proper divisors (1).

203212133320121 is an equidigital number, since it uses as much as digits as its factorization.

203212133320121 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2592, while the sum is 26.

Adding to 203212133320121 its reverse (121023331212302), we get a palindrome (324235464532423).

The spelling of 203212133320121 in words is "two hundred three trillion, two hundred twelve billion, one hundred thirty-three million, three hundred twenty thousand, one hundred twenty-one".