20111220120033 has 48 divisors (see below), whose sum is σ = 33289357385856. Its totient is φ = 11461023383040.

The previous prime is 20111220120031. The next prime is 20111220120049. The reversal of 20111220120033 is 33002102211102.

20111220120033 is a `hidden beast` number, since 201 + 11 + 220 + 1 + 200 + 33 = 666.

It is not a de Polignac number, because 20111220120033 - 2¹ = 20111220120031 is a prime.

It is a super-2 number, since 2×20111220120033² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 20111220119988 and 20111220120015.

It is not an unprimeable number, because it can be changed into a prime (20111220120031) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 138012910 + ... + 138158552.

It is an arithmetic number, because the mean of its divisors is an integer number (693528278872).

Almost surely, 2^{20111220120033} is an apocalyptic number.

It is an amenable number.

20111220120033 is a deficient number, since it is larger than the sum of its proper divisors (13178137265823).

20111220120033 is a wasteful number, since it uses less digits than its factorization.

20111220120033 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 151574 (or 151571 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

Adding to 20111220120033 its reverse (33002102211102), we get a palindrome (53113322331135).

The spelling of 20111220120033 in words is "twenty trillion, one hundred eleven billion, two hundred twenty million, one hundred twenty thousand, thirty-three".