220221871049 has 2 divisors, whose sum is σ = 220221871050. Its totient is φ = 220221871048.

The previous prime is 220221871021. The next prime is 220221871063. The reversal of 220221871049 is 940178122022.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 121726325449 + 98495545600 = 348893^2 + 313840^2 .

It is a cyclic number.

It is not a de Polignac number, because 220221871049 - 2²⁸ = 219953435593 is a prime.

It is not a weakly prime, because it can be changed into another prime (220221871069) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110110935524 + 110110935525.

It is an arithmetic number, because the mean of its divisors is an integer number (110110935525).

Almost surely, 2^220221871049 is an apocalyptic number.

It is an amenable number.

220221871049 is a deficient number, since it is larger than the sum of its proper divisors (1).

220221871049 is an equidigital number, since it uses as much as digits as its factorization.

220221871049 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 32256, while the sum is 38.

The spelling of 220221871049 in words is "two hundred twenty billion, two hundred twenty-one million, eight hundred seventy-one thousand, forty-nine".