2226021 has 24 divisors (see below), whose sum is σ = 3638880. Its totient is φ = 1203552.

The previous prime is 2226019. The next prime is 2226023. The reversal of 2226021 is 1206222.

It is an interprime number because it is at equal distance from previous prime (2226019) and next prime (2226023).

It is not a de Polignac number, because 2226021 - 2¹ = 2226019 is a prime.

It is a Curzon number.

2226021 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2226023) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2395 + ... + 3191.

It is an arithmetic number, because the mean of its divisors is an integer number (151620).

2^2226021 is an apocalyptic number.

2226021 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

2226021 is a deficient number, since it is larger than the sum of its proper divisors (1412859).

2226021 is a wasteful number, since it uses less digits than its factorization.

2226021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 833 (or 826 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 15.

The square root of 2226021 is about 1491.9855897427. The cubic root of 2226021 is about 130.5699042694.

The spelling of 2226021 in words is "two million, two hundred twenty-six thousand, twenty-one".