2047221 has 32 divisors (see below), whose sum is σ = 3392640. Its totient is φ = 1209600.

The previous prime is 2047219. The next prime is 2047237. The reversal of 2047221 is 1227402.

It is not a de Polignac number, because 2047221 - 2¹ = 2047219 is a prime.

It is a super-2 number, since 2×2047221² = 8382227645682, which contains 22 as substring.

2047221 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 2047194 and 2047203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2047211) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 18061 + ... + 18173.

It is an arithmetic number, because the mean of its divisors is an integer number (106020).

2^2047221 is an apocalyptic number.

It is an amenable number.

2047221 is a deficient number, since it is larger than the sum of its proper divisors (1345419).

2047221 is a wasteful number, since it uses less digits than its factorization.

2047221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 194 (or 188 counting only the distinct ones).

The product of its (nonzero) digits is 224, while the sum is 18.

The square root of 2047221 is about 1430.8113083143. The cubic root of 2047221 is about 126.9759807429.

The spelling of 2047221 in words is "two million, forty-seven thousand, two hundred twenty-one".