1212012220919 has 2 divisors, whose sum is σ = 1212012220920. Its totient is φ = 1212012220918.

The previous prime is 1212012220907. The next prime is 1212012220943. The reversal of 1212012220919 is 9190222102121.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1212012220919 - 2¹² = 1212012216823 is a prime.

It is a super-2 number, since 2×1212012220919² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1212012820919) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 606006110459 + 606006110460.

It is an arithmetic number, because the mean of its divisors is an integer number (606006110460).

Almost surely, 2^{1212012220919} is an apocalyptic number.

1212012220919 is a deficient number, since it is larger than the sum of its proper divisors (1).

1212012220919 is an equidigital number, since it uses as much as digits as its factorization.

1212012220919 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2592, while the sum is 32.

The spelling of 1212012220919 in words is "one trillion, two hundred twelve billion, twelve million, two hundred twenty thousand, nine hundred nineteen".