2067221 has 4 divisors (see below), whose sum is σ = 2226252. Its totient is φ = 1908192.

The previous prime is 2067211. The next prime is 2067253. The reversal of 2067221 is 1227602.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 790321 + 1276900 = 889^2 + 1130^2 .

It is a de Polignac number, because none of the positive numbers 2^k-2067221 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2067193 and 2067202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2067211) 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, 79496 + ... + 79521.

It is an arithmetic number, because the mean of its divisors is an integer number (556563).

2^2067221 is an apocalyptic number.

It is an amenable number.

2067221 is a deficient number, since it is larger than the sum of its proper divisors (159031).

2067221 is a wasteful number, since it uses less digits than its factorization.

2067221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 159030.

The product of its (nonzero) digits is 336, while the sum is 20.

The square root of 2067221 is about 1437.7833633757. The cubic root of 2067221 is about 127.3881320441.

The spelling of 2067221 in words is "two million, sixty-seven thousand, two hundred twenty-one".