1212212020277 has 2 divisors, whose sum is σ = 1212212020278. Its totient is φ = 1212212020276.

The previous prime is 1212212020183. The next prime is 1212212020291. The reversal of 1212212020277 is 7720202122121.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 912943941361 + 299268078916 = 955481^2 + 547054^2 .

It is an emirp because it is prime and its reverse (7720202122121) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1212212020277 - 2¹² = 1212212016181 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1212212020777) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 606106010138 + 606106010139.

It is an arithmetic number, because the mean of its divisors is an integer number (606106010139).

Almost surely, 2^{1212212020277} is an apocalyptic number.

It is an amenable number.

1212212020277 is a deficient number, since it is larger than the sum of its proper divisors (1).

1212212020277 is an equidigital number, since it uses as much as digits as its factorization.

1212212020277 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3136, while the sum is 29.

Adding to 1212212020277 its reverse (7720202122121), we get a palindrome (8932414142398).

The spelling of 1212212020277 in words is "one trillion, two hundred twelve billion, two hundred twelve million, twenty thousand, two hundred seventy-seven".