1022021219 has 8 divisors (see below), whose sum is σ = 1059158160. Its totient is φ = 985010656.

The previous prime is 1022021171. The next prime is 1022021239. The reversal of 1022021219 is 9121202201.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1022021219 - 2²⁰ = 1020972643 is a prime.

It is a super-2 number, since 2×1022021219² = 2089054744172491922, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1022021219.

It is not an unprimeable number, because it can be changed into a prime (1022021239) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14972 + ... + 47625.

It is an arithmetic number, because the mean of its divisors is an integer number (132394770).

Almost surely, 2^1022021219 is an apocalyptic number.

1022021219 is a deficient number, since it is larger than the sum of its proper divisors (37136941).

1022021219 is an equidigital number, since it uses as much as digits as its factorization.

1022021219 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63189.

The product of its (nonzero) digits is 144, while the sum is 20.

The square root of 1022021219 is about 31969.0665956953. The cubic root of 1022021219 is about 1007.2871744321.

The spelling of 1022021219 in words is "one billion, twenty-two million, twenty-one thousand, two hundred nineteen".