1880241221 has 2 divisors, whose sum is σ = 1880241222. Its totient is φ = 1880241220.

The previous prime is 1880241211. The next prime is 1880241277. The reversal of 1880241221 is 1221420881.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1641384196 + 238857025 = 40514^2 + 15455^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1880241221 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1880241211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 940120610 + 940120611.

It is an arithmetic number, because the mean of its divisors is an integer number (940120611).

Almost surely, 2^1880241221 is an apocalyptic number.

It is an amenable number.

1880241221 is a deficient number, since it is larger than the sum of its proper divisors (1).

1880241221 is an equidigital number, since it uses as much as digits as its factorization.

1880241221 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2048, while the sum is 29.

The square root of 1880241221 is about 43361.7483618915. The cubic root of 1880241221 is about 1234.2539426875.

The spelling of 1880241221 in words is "one billion, eight hundred eighty million, two hundred forty-one thousand, two hundred twenty-one".