2750434213221 has 20 divisors (see below), whose sum is σ = 4287311304672. Its totient is φ = 1753900076808.

The previous prime is 2750434213201. The next prime is 2750434213237. The reversal of 2750434213221 is 1223124340572.

2750434213221 is a `hidden beast` number, since 2 + 7 + 5 + 0 + 4 + 3 + 421 + 3 + 221 = 666.

It is not a de Polignac number, because 2750434213221 - 2⁶ = 2750434213157 is a prime.

It is a super-2 number, since 2×2750434213221² (a number of 26 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2750434213201) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 738171571 + ... + 738175296.

Almost surely, 2^{2750434213221} is an apocalyptic number.

It is an amenable number.

2750434213221 is a deficient number, since it is larger than the sum of its proper divisors (1536877091451).

2750434213221 is a wasteful number, since it uses less digits than its factorization.

2750434213221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1476346902 (or 1476346893 counting only the distinct ones).

The product of its (nonzero) digits is 80640, while the sum is 36.

Adding to 2750434213221 its reverse (1223124340572), we get a palindrome (3973558553793).

The spelling of 2750434213221 in words is "two trillion, seven hundred fifty billion, four hundred thirty-four million, two hundred thirteen thousand, two hundred twenty-one".