1012020221239 has 2 divisors, whose sum is σ = 1012020221240. Its totient is φ = 1012020221238.

The previous prime is 1012020221141. The next prime is 1012020221273. The reversal of 1012020221239 is 9321220202101.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1012020221239 - 2⁷ = 1012020221111 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1012020221299) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 506010110619 + 506010110620.

It is an arithmetic number, because the mean of its divisors is an integer number (506010110620).

Almost surely, 2^{1012020221239} is an apocalyptic number.

1012020221239 is a deficient number, since it is larger than the sum of its proper divisors (1).

1012020221239 is an equidigital number, since it uses as much as digits as its factorization.

1012020221239 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 864, while the sum is 25.

The spelling of 1012020221239 in words is "one trillion, twelve billion, twenty million, two hundred twenty-one thousand, two hundred thirty-nine".