220021221239 has 2 divisors, whose sum is σ = 220021221240. Its totient is φ = 220021221238.

The previous prime is 220021221197. The next prime is 220021221283. The reversal of 220021221239 is 932122120022.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 220021221239 - 2¹⁶ = 220021155703 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (220021221439) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110010610619 + 110010610620.

It is an arithmetic number, because the mean of its divisors is an integer number (110010610620).

Almost surely, 2^220021221239 is an apocalyptic number.

220021221239 is a deficient number, since it is larger than the sum of its proper divisors (1).

220021221239 is an equidigital number, since it uses as much as digits as its factorization.

220021221239 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1728, while the sum is 26.

The spelling of 220021221239 in words is "two hundred twenty billion, twenty-one million, two hundred twenty-one thousand, two hundred thirty-nine".