121212223002077 has 2 divisors, whose sum is σ = 121212223002078. Its totient is φ = 121212223002076.

The previous prime is 121212223001939. The next prime is 121212223002097. The reversal of 121212223002077 is 770200322212121.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 118850573263321 + 2361649738756 = 10901861^2 + 1536766^2 .

It is a cyclic number.

It is not a de Polignac number, because 121212223002077 - 2²⁸ = 121211954566621 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (121212223002097) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60606111501038 + 60606111501039.

It is an arithmetic number, because the mean of its divisors is an integer number (60606111501039).

Almost surely, 2^{121212223002077} is an apocalyptic number.

It is an amenable number.

121212223002077 is a deficient number, since it is larger than the sum of its proper divisors (1).

121212223002077 is an equidigital number, since it uses as much as digits as its factorization.

121212223002077 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9408, while the sum is 32.

Adding to 121212223002077 its reverse (770200322212121), we get a palindrome (891412545214198).

The spelling of 121212223002077 in words is "one hundred twenty-one trillion, two hundred twelve billion, two hundred twenty-three million, two thousand, seventy-seven".