2121642225013 has 8 divisors (see below), whose sum is σ = 2214260452800. Its totient is φ = 2029055073408.

The previous prime is 2121642225007. The next prime is 2121642225041. The reversal of 2121642225013 is 3105222461212.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2121642225013 - 2¹³ = 2121642216821 is a prime.

It is a super-2 number, since 2×2121642225013² (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 (2121642225113) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7629468 + ... + 7902661.

It is an arithmetic number, because the mean of its divisors is an integer number (276782556600).

Almost surely, 2^{2121642225013} is an apocalyptic number.

2121642225013 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

It is an amenable number.

2121642225013 is a deficient number, since it is larger than the sum of its proper divisors (92618227787).

2121642225013 is a wasteful number, since it uses less digits than its factorization.

2121642225013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15538091.

The product of its (nonzero) digits is 11520, while the sum is 31.

Adding to 2121642225013 its reverse (3105222461212), we get a palindrome (5226864686225).

The spelling of 2121642225013 in words is "two trillion, one hundred twenty-one billion, six hundred forty-two million, two hundred twenty-five thousand, thirteen".