2121342122401 has 4 divisors (see below), whose sum is σ = 2122269690112. Its totient is φ = 2120414554692.

The previous prime is 2121342122327. The next prime is 2121342122407. The reversal of 2121342122401 is 1042212431212.

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 2121342122401 - 2²¹ = 2121340025249 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2121342122407) 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, 463780425 + ... + 463784998.

It is an arithmetic number, because the mean of its divisors is an integer number (530567422528).

Almost surely, 2^{2121342122401} is an apocalyptic number.

It is an amenable number.

2121342122401 is a deficient number, since it is larger than the sum of its proper divisors (927567711).

2121342122401 is an equidigital number, since it uses as much as digits as its factorization.

2121342122401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 927567710.

The product of its (nonzero) digits is 1536, while the sum is 25.

Adding to 2121342122401 its reverse (1042212431212), we get a palindrome (3163554553613).

The spelling of 2121342122401 in words is "two trillion, one hundred twenty-one billion, three hundred forty-two million, one hundred twenty-two thousand, four hundred one".