1020421219 has 2 divisors, whose sum is σ = 1020421220. Its totient is φ = 1020421218.

The previous prime is 1020421177. The next prime is 1020421247. The reversal of 1020421219 is 9121240201.

1020421219 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1020421219 - 2¹³ = 1020413027 is a prime.

It is a super-2 number, since 2×1020421219² = 2082518928370891922, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1020421219.

It is not a weakly prime, because it can be changed into another prime (1020421319) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 510210609 + 510210610.

It is an arithmetic number, because the mean of its divisors is an integer number (510210610).

Almost surely, 2^1020421219 is an apocalyptic number.

1020421219 is a deficient number, since it is larger than the sum of its proper divisors (1).

1020421219 is an equidigital number, since it uses as much as digits as its factorization.

1020421219 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 288, while the sum is 22.

The square root of 1020421219 is about 31944.0326039152. The cubic root of 1020421219 is about 1006.7612553962.

The spelling of 1020421219 in words is "one billion, twenty million, four hundred twenty-one thousand, two hundred nineteen".