20220113 has 4 divisors (see below), whose sum is σ = 20285028. Its totient is φ = 20155200.

The previous prime is 20220103. The next prime is 20220119. The reversal of 20220113 is 31102202.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 7745089 + 12475024 = 2783^2 + 3532^2 .

It is a cyclic number.

It is not a de Polignac number, because 20220113 - 2⁶ = 20220049 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20220094 and 20220103.

It is not an unprimeable number, because it can be changed into a prime (20220119) 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, 31988 + ... + 32613.

It is an arithmetic number, because the mean of its divisors is an integer number (5071257).

Almost surely, 2^20220113 is an apocalyptic number.

It is an amenable number.

20220113 is a deficient number, since it is larger than the sum of its proper divisors (64915).

20220113 is an equidigital number, since it uses as much as digits as its factorization.

20220113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64914.

The product of its (nonzero) digits is 24, while the sum is 11.

The square root of 20220113 is about 4496.6779960322. The cubic root of 20220113 is about 272.4339283743.

Adding to 20220113 its reverse (31102202), we get a palindrome (51322315).

The spelling of 20220113 in words is "twenty million, two hundred twenty thousand, one hundred thirteen".