243210400122133 has 4 divisors (see below), whose sum is σ = 243210445061868. Its totient is φ = 243210355182400.

The previous prime is 243210400122101. The next prime is 243210400122181. The reversal of 243210400122133 is 331221004012342.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 162840645375409 + 80369754746724 = 12760903^2 + 8964918^2 .

It is a cyclic number.

It is not a de Polignac number, because 243210400122133 - 2⁵ = 243210400122101 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 (243210400122233) 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, 13030066 + ... + 25616467.

It is an arithmetic number, because the mean of its divisors is an integer number (60802611265467).

Almost surely, 2^{243210400122133} is an apocalyptic number.

It is an amenable number.

243210400122133 is a deficient number, since it is larger than the sum of its proper divisors (44939735).

243210400122133 is an equidigital number, since it uses as much as digits as its factorization.

243210400122133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44939734.

The product of its (nonzero) digits is 6912, while the sum is 28.

Adding to 243210400122133 its reverse (331221004012342), we get a palindrome (574431404134475).

The spelling of 243210400122133 in words is "two hundred forty-three trillion, two hundred ten billion, four hundred million, one hundred twenty-two thousand, one hundred thirty-three".