1216245426341 has 4 divisors (see below), whose sum is σ = 1326813192384. Its totient is φ = 1105677660300.

The previous prime is 1216245426269. The next prime is 1216245426343. The reversal of 1216245426341 is 1436245426121.

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 a cyclic number.

It is not a de Polignac number, because 1216245426341 - 2¹⁴ = 1216245409957 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1216245426343) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 55283883005 + ... + 55283883026.

It is an arithmetic number, because the mean of its divisors is an integer number (331703298096).

Almost surely, 2^{1216245426341} is an apocalyptic number.

1216245426341 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1216245426341 is a deficient number, since it is larger than the sum of its proper divisors (110567766043).

1216245426341 is a wasteful number, since it uses less digits than its factorization.

1216245426341 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 110567766042.

The product of its digits is 276480, while the sum is 41.

The spelling of 1216245426341 in words is "one trillion, two hundred sixteen billion, two hundred forty-five million, four hundred twenty-six thousand, three hundred forty-one".