1011221112019 has 16 divisors (see below), whose sum is σ = 1047379481280. Its totient is φ = 975701151360.

The previous prime is 1011221111987. The next prime is 1011221112049. The reversal of 1011221112019 is 9102111221101.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 1011221112019 - 2⁵ = 1011221111987 is a prime.

It is a super-2 number, since 2×1011221112019² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1011221112049) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20171517 + ... + 20221585.

It is an arithmetic number, because the mean of its divisors is an integer number (65461217580).

Almost surely, 2^{1011221112019} is an apocalyptic number.

1011221112019 is a deficient number, since it is larger than the sum of its proper divisors (36158369261).

1011221112019 is an equidigital number, since it uses as much as digits as its factorization.

1011221112019 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56430.

The product of its (nonzero) digits is 72, while the sum is 22.

The spelling of 1011221112019 in words is "one trillion, eleven billion, two hundred twenty-one million, one hundred twelve thousand, nineteen".