2124242123401 has 4 divisors (see below), whose sum is σ = 2124649930900. Its totient is φ = 2123834315904.

The previous prime is 2124242123389. The next prime is 2124242123411. The reversal of 2124242123401 is 1043212424212.

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 2041355137600 + 82886985801 = 1428760^2 + 287901^2 .

It is a cyclic number.

It is not a de Polignac number, because 2124242123401 - 2¹³ = 2124242115209 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2124242123401.

It is not an unprimeable number, because it can be changed into a prime (2124242123411) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 203895936 + ... + 203906353.

It is an arithmetic number, because the mean of its divisors is an integer number (531162482725).

Almost surely, 2^{2124242123401} is an apocalyptic number.

It is an amenable number.

2124242123401 is a deficient number, since it is larger than the sum of its proper divisors (407807499).

2124242123401 is an equidigital number, since it uses as much as digits as its factorization.

2124242123401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 407807498.

The product of its (nonzero) digits is 6144, while the sum is 28.

Adding to 2124242123401 its reverse (1043212424212), we get a palindrome (3167454547613).

The spelling of 2124242123401 in words is "two trillion, one hundred twenty-four billion, two hundred forty-two million, one hundred twenty-three thousand, four hundred one".