1212424220013 has 4 divisors (see below), whose sum is σ = 1616565626688. Its totient is φ = 808282813340.

The previous prime is 1212424219973. The next prime is 1212424220053. The reversal of 1212424220013 is 3100224242121.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is an interprime number because it is at equal distance from previous prime (1212424219973) and next prime (1212424220053).

It is a cyclic number.

It is not a de Polignac number, because 1212424220013 - 2²⁴ = 1212407442797 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1212424220053) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 202070703333 + ... + 202070703338.

It is an arithmetic number, because the mean of its divisors is an integer number (404141406672).

Almost surely, 2^{1212424220013} is an apocalyptic number.

It is an amenable number.

1212424220013 is a deficient number, since it is larger than the sum of its proper divisors (404141406675).

1212424220013 is an equidigital number, since it uses as much as digits as its factorization.

1212424220013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 404141406674.

The product of its (nonzero) digits is 1536, while the sum is 24.

Adding to 1212424220013 its reverse (3100224242121), we get a palindrome (4312648462134).

The spelling of 1212424220013 in words is "one trillion, two hundred twelve billion, four hundred twenty-four million, two hundred twenty thousand, thirteen".