121213213127 has 2 divisors, whose sum is σ = 121213213128. Its totient is φ = 121213213126.

The previous prime is 121213213117. The next prime is 121213213133. The reversal of 121213213127 is 721312312121.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 121213213127 - 2⁴ = 121213213111 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 121213213096 and 121213213105.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (121213213117) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60606606563 + 60606606564.

It is an arithmetic number, because the mean of its divisors is an integer number (60606606564).

Almost surely, 2^121213213127 is an apocalyptic number.

121213213127 is a deficient number, since it is larger than the sum of its proper divisors (1).

121213213127 is an equidigital number, since it uses as much as digits as its factorization.

121213213127 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1008, while the sum is 26.

Adding to 121213213127 its reverse (721312312121), we get a palindrome (842525525248).

The spelling of 121213213127 in words is "one hundred twenty-one billion, two hundred thirteen million, two hundred thirteen thousand, one hundred twenty-seven".