1012220219 has 4 divisors (see below), whose sum is σ = 1012351344. Its totient is φ = 1012089096.

The previous prime is 1012220191. The next prime is 1012220227. The reversal of 1012220219 is 9120222101.

It is a happy number.

1012220219 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9120222101 = 17 ⋅536483653.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1012220219 is a prime.

It is a super-2 number, since 2×1012220219² = 2049179543504815922, 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 1012220219.

It is not an unprimeable number, because it can be changed into a prime (1012220249) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 53207 + ... + 69680.

It is an arithmetic number, because the mean of its divisors is an integer number (253087836).

Almost surely, 2^1012220219 is an apocalyptic number.

1012220219 is a deficient number, since it is larger than the sum of its proper divisors (131125).

1012220219 is an equidigital number, since it uses as much as digits as its factorization.

1012220219 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 131124.

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

The square root of 1012220219 is about 31815.4085153719. The cubic root of 1012220219 is about 1004.0569254322.

The spelling of 1012220219 in words is "one billion, twelve million, two hundred twenty thousand, two hundred nineteen".