20112233001231 has 40 divisors (see below), whose sum is σ = 32644001289600. Its totient is φ = 10993021674096.

The previous prime is 20112233001181. The next prime is 20112233001241. The reversal of 20112233001231 is 13210033221102.

It is not a de Polignac number, because 20112233001231 - 2¹⁴ = 20112232984847 is a prime.

It is a super-2 number, since 2×20112233001231² (a number of 27 digits) contains 22 as substring.

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

It is a junction number, because it is equal to n+sod(n) for n = 20112233001198 and 20112233001207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20112233001241) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 60534381 + ... + 60865718.

It is an arithmetic number, because the mean of its divisors is an integer number (816100032240).

Almost surely, 2^{20112233001231} is an apocalyptic number.

20112233001231 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

20112233001231 is a deficient number, since it is larger than the sum of its proper divisors (12531768288369).

20112233001231 is an equidigital number, since it uses as much as digits as its factorization.

20112233001231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 121400153 (or 121400132 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 21.

Adding to 20112233001231 its reverse (13210033221102), we get a palindrome (33322266222333).

The spelling of 20112233001231 in words is "twenty trillion, one hundred twelve billion, two hundred thirty-three million, one thousand, two hundred thirty-one".