2870000221 has 4 divisors (see below), whose sum is σ = 3130909344. Its totient is φ = 2609091100.

The previous prime is 2870000209. The next prime is 2870000233. The reversal of 2870000221 is 1220000782.

2870000221 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 an interprime number because it is at equal distance from previous prime (2870000209) and next prime (2870000233).

It is not a de Polignac number, because 2870000221 - 2⁷ = 2870000093 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2870000192 and 2870000201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2870000251) 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, 130454545 + ... + 130454566.

It is an arithmetic number, because the mean of its divisors is an integer number (782727336).

Almost surely, 2^2870000221 is an apocalyptic number.

It is an amenable number.

2870000221 is a deficient number, since it is larger than the sum of its proper divisors (260909123).

2870000221 is a wasteful number, since it uses less digits than its factorization.

2870000221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 260909122.

The product of its (nonzero) digits is 448, while the sum is 22.

The square root of 2870000221 is about 53572.3830065455. The cubic root of 2870000221 is about 1421.1087388104.

The spelling of 2870000221 in words is "two billion, eight hundred seventy million, two hundred twenty-one", and thus it is an aban number.