1213420553245 has 8 divisors (see below), whose sum is σ = 1480784404320. Its totient is φ = 954283282320.

The previous prime is 1213420553243. The next prime is 1213420553269. The reversal of 1213420553245 is 5423550243121.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1213420553245 - 2¹ = 1213420553243 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1213420553243) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2056644711 + ... + 2056645300.

It is an arithmetic number, because the mean of its divisors is an integer number (185098050540).

Almost surely, 2^{1213420553245} is an apocalyptic number.

It is an amenable number.

1213420553245 is a deficient number, since it is larger than the sum of its proper divisors (267363851075).

1213420553245 is an equidigital number, since it uses as much as digits as its factorization.

1213420553245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4113290075.

The product of its (nonzero) digits is 144000, while the sum is 37.

Adding to 1213420553245 its reverse (5423550243121), we get a palindrome (6636970796366).

The spelling of 1213420553245 in words is "one trillion, two hundred thirteen billion, four hundred twenty million, five hundred fifty-three thousand, two hundred forty-five".