20023122 has 32 divisors (see below), whose sum is σ = 46835712. Its totient is φ = 5587344.

The previous prime is 20023121. The next prime is 20023139. The reversal of 20023122 is 22132002.

It is a super-3 number, since 3×20023122³ (a number of 23 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 20023098 and 20023107.

It is not an unprimeable number, because it can be changed into a prime (20023121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3738 + ... + 7349.

It is an arithmetic number, because the mean of its divisors is an integer number (1463616).

Almost surely, 2^20023122 is an apocalyptic number.

20023122 is an abundant number, since it is smaller than the sum of its proper divisors (26812590).

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

20023122 is a wasteful number, since it uses less digits than its factorization.

20023122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11142.

The product of its (nonzero) digits is 48, while the sum is 12.

The square root of 20023122 is about 4474.7203264562. The cubic root of 20023122 is about 271.5463259811.

Adding to 20023122 its reverse (22132002), we get a palindrome (42155124).

The spelling of 20023122 in words is "twenty million, twenty-three thousand, one hundred twenty-two".