2119221 has 24 divisors (see below), whose sum is σ = 3363360. Its totient is φ = 1277856.

The previous prime is 2119211. The next prime is 2119231. The reversal of 2119221 is 1229112.

It is an interprime number because it is at equal distance from previous prime (2119211) and next prime (2119231).

It is not a de Polignac number, because 2119221 - 2⁵ = 2119189 is a prime.

It is an Ulam number.

It is a junction number, because it is equal to n+sod(n) for n = 2119194 and 2119203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2119211) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6750 + ... + 7056.

It is an arithmetic number, because the mean of its divisors is an integer number (140140).

2^2119221 is an apocalyptic number.

2119221 is the 921-st heptagonal number.

It is an amenable number.

2119221 is a deficient number, since it is larger than the sum of its proper divisors (1244139).

2119221 is a wasteful number, since it uses less digits than its factorization.

2119221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 385 (or 382 counting only the distinct ones).

The product of its digits is 72, while the sum is 18.

The square root of 2119221 is about 1455.7544435790. The cubic root of 2119221 is about 128.4474291257.

The spelling of 2119221 in words is "two million, one hundred nineteen thousand, two hundred twenty-one".