212121023023201 has 2 divisors, whose sum is σ = 212121023023202. Its totient is φ = 212121023023200.

The previous prime is 212121023023081. The next prime is 212121023023223. The reversal of 212121023023201 is 102320320121212.

It is an a-pointer prime, because the next prime (212121023023223) can be obtained adding 212121023023201 to its sum of digits (22).

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 211886015253025 + 235007770176 = 14556305^2 + 484776^2 .

It is a cyclic number.

It is not a de Polignac number, because 212121023023201 - 2¹¹ = 212121023021153 is a prime.

It is a super-3 number, since 3×212121023023201³ (a number of 44 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (212121023023601) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106060511511600 + 106060511511601.

It is an arithmetic number, because the mean of its divisors is an integer number (106060511511601).

Almost surely, 2^{212121023023201} is an apocalyptic number.

It is an amenable number.

212121023023201 is a deficient number, since it is larger than the sum of its proper divisors (1).

212121023023201 is an equidigital number, since it uses as much as digits as its factorization.

212121023023201 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 576, while the sum is 22.

Adding to 212121023023201 its reverse (102320320121212), we get a palindrome (314441343144413).

The spelling of 212121023023201 in words is "two hundred twelve trillion, one hundred twenty-one billion, twenty-three million, twenty-three thousand, two hundred one".