20131122 has 16 divisors (see below), whose sum is σ = 43922592. Its totient is φ = 6100320.

The previous prime is 20131117. The next prime is 20131129. The reversal of 20131122 is 22113102.

It is a junction number, because it is equal to n+sod(n) for n = 20131098 and 20131107.

It is not an unprimeable number, because it can be changed into a prime (20131129) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 152443 + ... + 152574.

It is an arithmetic number, because the mean of its divisors is an integer number (2745162).

Almost surely, 2^20131122 is an apocalyptic number.

20131122 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

20131122 is an abundant number, since it is smaller than the sum of its proper divisors (23791470).

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

20131122 is a wasteful number, since it uses less digits than its factorization.

20131122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 305033.

The product of its (nonzero) digits is 24, while the sum is 12.

The square root of 20131122 is about 4486.7718907919. The cubic root of 20131122 is about 272.0336697795.

Adding to 20131122 its reverse (22113102), we get a palindrome (42244224).

The spelling of 20131122 in words is "twenty million, one hundred thirty-one thousand, one hundred twenty-two".