1011212019 has 10 divisors (see below), whose sum is σ = 1510576100. Its totient is φ = 674141292.

The previous prime is 1011212011. The next prime is 1011212029. The reversal of 1011212019 is 9102121101.

It is a happy number.

It is not a de Polignac number, because 1011212019 - 2³ = 1011212011 is a prime.

It is a super-2 number, since 2×1011212019² = 2045099494740112722, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1011211992 and 1011212010.

It is not an unprimeable number, because it can be changed into a prime (1011212011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 6241969 + ... + 6242130.

It is an arithmetic number, because the mean of its divisors is an integer number (151057610).

Almost surely, 2^1011212019 is an apocalyptic number.

1011212019 is a deficient number, since it is larger than the sum of its proper divisors (499364081).

1011212019 is an equidigital number, since it uses as much as digits as its factorization.

1011212019 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12484111 (or 12484102 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 18.

The square root of 1011212019 is about 31799.5600441264. The cubic root of 1011212019 is about 1003.7234583173.

The spelling of 1011212019 in words is "one billion, eleven million, two hundred twelve thousand, nineteen".