1820020011033 has 24 divisors (see below), whose sum is σ = 2946099299392. Its totient is φ = 978834288384.

The previous prime is 1820020011013. The next prime is 1820020011041. The reversal of 1820020011033 is 3301100200281.

It is not a de Polignac number, because 1820020011033 - 2¹⁴ = 1820019994649 is a prime.

It is a super-2 number, since 2×1820020011033² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1820020011013) 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 23 ways as a sum of consecutive naturals, for example, 149937910 + ... + 149950047.

Almost surely, 2^{1820020011033} is an apocalyptic number.

It is an amenable number.

1820020011033 is a deficient number, since it is larger than the sum of its proper divisors (1126079288359).

1820020011033 is a wasteful number, since it uses less digits than its factorization.

1820020011033 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 299888001 (or 299887984 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 21.

The spelling of 1820020011033 in words is "one trillion, eight hundred twenty billion, twenty million, eleven thousand, thirty-three".