20112031224 has 48 divisors (see below), whose sum is σ = 54492558120. Its totient is φ = 6701244480.

The previous prime is 20112031141. The next prime is 20112031301. The reversal of 20112031224 is 42213021102.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 20112031197 and 20112031206.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 121959 + ... + 234729.

Almost surely, 2^20112031224 is an apocalyptic number.

20112031224 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

20112031224 is an abundant number, since it is smaller than the sum of its proper divisors (34380526896).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20112031224 is a wasteful number, since it uses less digits than its factorization.

20112031224 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 115260 (or 115253 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

Adding to 20112031224 its reverse (42213021102), we get a palindrome (62325052326).

The spelling of 20112031224 in words is "twenty billion, one hundred twelve million, thirty-one thousand, two hundred twenty-four".