20111122033 has 4 divisors (see below), whose sum is σ = 21169602160. Its totient is φ = 19052641908.

The previous prime is 20111122021. The next prime is 20111122051. The reversal of 20111122033 is 33022111102.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 33022111102 = 2 ⋅16511055551.

It is a cyclic number.

It is not a de Polignac number, because 20111122033 - 2¹⁷ = 20110990961 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20111121998 and 20111122016.

It is not an unprimeable number, because it can be changed into a prime (20111122013) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 529240035 + ... + 529240072.

It is an arithmetic number, because the mean of its divisors is an integer number (5292400540).

Almost surely, 2^20111122033 is an apocalyptic number.

It is an amenable number.

20111122033 is a deficient number, since it is larger than the sum of its proper divisors (1058480127).

20111122033 is a wasteful number, since it uses less digits than its factorization.

20111122033 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1058480126.

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 20111122033 its reverse (33022111102), we get a palindrome (53133233135).

The spelling of 20111122033 in words is "twenty billion, one hundred eleven million, one hundred twenty-two thousand, thirty-three".