1001222019 has 64 divisors (see below), whose sum is σ = 1744512000. Its totient is φ = 555641856.

The previous prime is 1001222017. The next prime is 1001222023. The reversal of 1001222019 is 9102221001.

It is not a de Polignac number, because 1001222019 - 2¹ = 1001222017 is a prime.

It is a super-2 number, since 2×1001222019² = 2004891062660872722, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1001221992 and 1001222010.

It is not an unprimeable number, because it can be changed into a prime (1001222017) 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 63 ways as a sum of consecutive naturals, for example, 2836147 + ... + 2836499.

It is an arithmetic number, because the mean of its divisors is an integer number (27258000).

Almost surely, 2^1001222019 is an apocalyptic number.

1001222019 is a deficient number, since it is larger than the sum of its proper divisors (743289981).

1001222019 is a wasteful number, since it uses less digits than its factorization.

1001222019 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 761 (or 755 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 18.

The square root of 1001222019 is about 31642.0925193009. The cubic root of 1001222019 is about 1000.4071738536.

The spelling of 1001222019 in words is "one billion, one million, two hundred twenty-two thousand, nineteen".