1941221 has 2 divisors, whose sum is σ = 1941222. Its totient is φ = 1941220.

The previous prime is 1941193. The next prime is 1941229. The reversal of 1941221 is 1221491.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1677025 + 264196 = 1295^2 + 514^2 .

It is a cyclic number.

It is not a de Polignac number, because 1941221 - 2⁶ = 1941157 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 1941193 and 1941202.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1941229) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 970610 + 970611.

It is an arithmetic number, because the mean of its divisors is an integer number (970611).

2^1941221 is an apocalyptic number.

It is an amenable number.

1941221 is a deficient number, since it is larger than the sum of its proper divisors (1).

1941221 is an equidigital number, since it uses as much as digits as its factorization.

1941221 is an evil number, because the sum of its binary digits is even.

The product of its digits is 144, while the sum is 20.

The square root of 1941221 is about 1393.2770722294. The cubic root of 1941221 is about 124.7455303130.

The spelling of 1941221 in words is "one million, nine hundred forty-one thousand, two hundred twenty-one".