20011232221233 has 24 divisors (see below), whose sum is σ = 29366498798784. Its totient is φ = 12111998199840.

The previous prime is 20011232221129. The next prime is 20011232221237. The reversal of 20011232221233 is 33212223211002.

It is not a de Polignac number, because 20011232221233 - 2¹⁰ = 20011232220209 is a prime.

It is a super-2 number, since 2×20011232221233² (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (20011232221237) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 36136941 + ... + 36686522.

It is an arithmetic number, because the mean of its divisors is an integer number (1223604116616).

Almost surely, 2^{20011232221233} is an apocalyptic number.

It is an amenable number.

20011232221233 is a deficient number, since it is larger than the sum of its proper divisors (9355266577551).

20011232221233 is a wasteful number, since it uses less digits than its factorization.

20011232221233 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72824245 (or 72824234 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 24.

Adding to 20011232221233 its reverse (33212223211002), we get a palindrome (53223455432235).

The spelling of 20011232221233 in words is "twenty trillion, eleven billion, two hundred thirty-two million, two hundred twenty-one thousand, two hundred thirty-three".