43030204200121 has 2 divisors, whose sum is σ = 43030204200122. Its totient is φ = 43030204200120.

The previous prime is 43030204200107. The next prime is 43030204200127. The reversal of 43030204200121 is 12100240203034.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 39954231916096 + 3075972284025 = 6320936^2 + 1753845^2 .

It is a cyclic number.

It is not a de Polignac number, because 43030204200121 - 2²³ = 43030195811513 is a prime.

It is a super-2 number, since 2×43030204200121² (a number of 28 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 43030204200092 and 43030204200101.

It is not a weakly prime, because it can be changed into another prime (43030204200127) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21515102100060 + 21515102100061.

It is an arithmetic number, because the mean of its divisors is an integer number (21515102100061).

Almost surely, 2^{43030204200121} is an apocalyptic number.

It is an amenable number.

43030204200121 is a deficient number, since it is larger than the sum of its proper divisors (1).

43030204200121 is an equidigital number, since it uses as much as digits as its factorization.

43030204200121 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1152, while the sum is 22.

Adding to 43030204200121 its reverse (12100240203034), we get a palindrome (55130444403155).

The spelling of 43030204200121 in words is "forty-three trillion, thirty billion, two hundred four million, two hundred thousand, one hundred twenty-one".