1213544233005 has 32 divisors (see below), whose sum is σ = 2091226273920. Its totient is φ = 597381100800.

The previous prime is 1213544233003. The next prime is 1213544233007. The reversal of 1213544233005 is 5003324453121.

It is an interprime number because it is at equal distance from previous prime (1213544233003) and next prime (1213544233007).

It is not a de Polignac number, because 1213544233005 - 2¹ = 1213544233003 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1213544233003) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1830955 + ... + 2404055.

It is an arithmetic number, because the mean of its divisors is an integer number (65350821060).

Almost surely, 2^{1213544233005} is an apocalyptic number.

1213544233005 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1213544233005 is a deficient number, since it is larger than the sum of its proper divisors (877682040915).

1213544233005 is a wasteful number, since it uses less digits than its factorization.

1213544233005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 583981.

The product of its (nonzero) digits is 43200, while the sum is 33.

Adding to 1213544233005 its reverse (5003324453121), we get a palindrome (6216868686126).

The spelling of 1213544233005 in words is "one trillion, two hundred thirteen billion, five hundred forty-four million, two hundred thirty-three thousand, five".