1212112221013 has 2 divisors, whose sum is σ = 1212112221014. Its totient is φ = 1212112221012.

The previous prime is 1212112220983. The next prime is 1212112221043. The reversal of 1212112221013 is 3101222112121.

It is a balanced prime because it is at equal distance from previous prime (1212112220983) and next prime (1212112221043).

It can be written as a sum of positive squares in only one way, i.e., 1205467851844 + 6644369169 = 1097938^2 + 81513^2 .

It is a cyclic number.

It is not a de Polignac number, because 1212112221013 - 2³⁷ = 1074673267541 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1212112221043) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 606056110506 + 606056110507.

It is an arithmetic number, because the mean of its divisors is an integer number (606056110507).

Almost surely, 2^{1212112221013} is an apocalyptic number.

It is an amenable number.

1212112221013 is a deficient number, since it is larger than the sum of its proper divisors (1).

1212112221013 is an equidigital number, since it uses as much as digits as its factorization.

1212112221013 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 96, while the sum is 19.

Adding to 1212112221013 its reverse (3101222112121), we get a palindrome (4313334333134).

The spelling of 1212112221013 in words is "one trillion, two hundred twelve billion, one hundred twelve million, two hundred twenty-one thousand, thirteen".