2121241402223 has 2 divisors, whose sum is σ = 2121241402224. Its totient is φ = 2121241402222.

The previous prime is 2121241402183. The next prime is 2121241402253. The reversal of 2121241402223 is 3222041421212.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2121241402223 - 2⁸ = 2121241401967 is a prime.

It is a Sophie Germain prime.

It is a junction number, because it is equal to n+sod(n) for n = 2121241402192 and 2121241402201.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2121241402253) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1060620701111 + 1060620701112.

It is an arithmetic number, because the mean of its divisors is an integer number (1060620701112).

Almost surely, 2^{2121241402223} is an apocalyptic number.

2121241402223 is a deficient number, since it is larger than the sum of its proper divisors (1).

2121241402223 is an equidigital number, since it uses as much as digits as its factorization.

2121241402223 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3072, while the sum is 26.

Adding to 2121241402223 its reverse (3222041421212), we get a palindrome (5343282823435).

The spelling of 2121241402223 in words is "two trillion, one hundred twenty-one billion, two hundred forty-one million, four hundred two thousand, two hundred twenty-three".