2750070221 has 4 divisors (see below), whose sum is σ = 2750185152. Its totient is φ = 2749955292.

The previous prime is 2750070199. The next prime is 2750070223. The reversal of 2750070221 is 1220700572.

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, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 2750070221 - 2²⁶ = 2682961357 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2750070223) 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, 6515 + ... + 74448.

It is an arithmetic number, because the mean of its divisors is an integer number (687546288).

Almost surely, 2^2750070221 is an apocalyptic number.

It is an amenable number.

2750070221 is a deficient number, since it is larger than the sum of its proper divisors (114931).

2750070221 is an equidigital number, since it uses as much as digits as its factorization.

2750070221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 114930.

The product of its (nonzero) digits is 1960, while the sum is 26.

The square root of 2750070221 is about 52441.1119351983. Note that the first 3 decimals coincide. The cubic root of 2750070221 is about 1401.0315901961.

Adding to 2750070221 its reverse (1220700572), we get a palindrome (3970770793).

The spelling of 2750070221 in words is "two billion, seven hundred fifty million, seventy thousand, two hundred twenty-one".