216674306301121 has 2 divisors, whose sum is σ = 216674306301122. Its totient is φ = 216674306301120.

The previous prime is 216674306300957. The next prime is 216674306301179. The reversal of 216674306301121 is 121103603476612.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 121513032657025 + 95161273644096 = 11023295^2 + 9755064^2 .

It is a cyclic number.

It is not a de Polignac number, because 216674306301121 - 2⁹ = 216674306300609 is a prime.

It is a super-2 number, since 2×216674306301121² (a number of 29 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (216674306301521) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 108337153150560 + 108337153150561.

It is an arithmetic number, because the mean of its divisors is an integer number (108337153150561).

Almost surely, 2^{216674306301121} is an apocalyptic number.

It is an amenable number.

216674306301121 is a deficient number, since it is larger than the sum of its proper divisors (1).

216674306301121 is an equidigital number, since it uses as much as digits as its factorization.

216674306301121 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 217728, while the sum is 43.

Adding to 216674306301121 its reverse (121103603476612), we get a palindrome (337777909777733).

The spelling of 216674306301121 in words is "two hundred sixteen trillion, six hundred seventy-four billion, three hundred six million, three hundred one thousand, one hundred twenty-one".