2121420241213 has 24 divisors (see below), whose sum is σ = 2658557811840. Its totient is φ = 1677883546080.

The previous prime is 2121420241207. The next prime is 2121420241243. The reversal of 2121420241213 is 3121420241212.

It is not a de Polignac number, because 2121420241213 - 2⁵ = 2121420241181 is a prime.

It is a super-2 number, since 2×2121420241213² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2121420241243) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1181248 + ... + 2374486.

It is an arithmetic number, because the mean of its divisors is an integer number (110773242160).

Almost surely, 2^{2121420241213} is an apocalyptic number.

It is an amenable number.

2121420241213 is a deficient number, since it is larger than the sum of its proper divisors (537137570627).

2121420241213 is a wasteful number, since it uses less digits than its factorization.

2121420241213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1196057 (or 1196050 counting only the distinct ones).

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

Adding to 2121420241213 its reverse (3121420241212), we get a palindrome (5242840482425).

Subtracting 2121420241213 from its reverse (3121420241212), we obtain a palindrome (999999999999).

The spelling of 2121420241213 in words is "two trillion, one hundred twenty-one billion, four hundred twenty million, two hundred forty-one thousand, two hundred thirteen".