2143221552413 has 4 divisors (see below), whose sum is σ = 2143236271008. Its totient is φ = 2143206833820.

The previous prime is 2143221552397. The next prime is 2143221552431. The reversal of 2143221552413 is 3142551223412.

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 2143221552413 - 2⁴ = 2143221552397 is a prime.

It is a super-2 number, since 2×2143221552413² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2143221552463) 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, 7138673 + ... + 7432838.

It is an arithmetic number, because the mean of its divisors is an integer number (535809067752).

Almost surely, 2^{2143221552413} is an apocalyptic number.

It is an amenable number.

2143221552413 is a deficient number, since it is larger than the sum of its proper divisors (14718595).

2143221552413 is a wasteful number, since it uses less digits than its factorization.

2143221552413 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14718594.

The product of its digits is 57600, while the sum is 35.

Adding to 2143221552413 its reverse (3142551223412), we get a palindrome (5285772775825).

The spelling of 2143221552413 in words is "two trillion, one hundred forty-three billion, two hundred twenty-one million, five hundred fifty-two thousand, four hundred thirteen".