121216020067 has 2 divisors, whose sum is σ = 121216020068. Its totient is φ = 121216020066.

The previous prime is 121216020053. The next prime is 121216020137. The reversal of 121216020067 is 760020612121.

It is a weak prime.

It is an emirp because it is prime and its reverse (760020612121) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-121216020067 is a prime.

It is not a weakly prime, because it can be changed into another prime (121216021067) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60608010033 + 60608010034.

It is an arithmetic number, because the mean of its divisors is an integer number (60608010034).

Almost surely, 2^121216020067 is an apocalyptic number.

121216020067 is a deficient number, since it is larger than the sum of its proper divisors (1).

121216020067 is an equidigital number, since it uses as much as digits as its factorization.

121216020067 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2016, while the sum is 28.

Adding to 121216020067 its reverse (760020612121), we get a palindrome (881236632188).

The spelling of 121216020067 in words is "one hundred twenty-one billion, two hundred sixteen million, twenty thousand, sixty-seven".