20120022 has 32 divisors (see below), whose sum is σ = 48152160. Its totient is φ = 6190560.

The previous prime is 20119991. The next prime is 20120029. The reversal of 20120022 is 22002102.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a junction number, because it is equal to n+sod(n) for n = 20119986 and 20120013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20120029) 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, 13629 + ... + 15032.

It is an arithmetic number, because the mean of its divisors is an integer number (1504755).

Almost surely, 2^20120022 is an apocalyptic number.

20120022 is an abundant number, since it is smaller than the sum of its proper divisors (28032138).

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

20120022 is a wasteful number, since it uses less digits than its factorization.

20120022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28685 (or 28679 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 9.

The square root of 20120022 is about 4485.5347507293. The cubic root of 20120022 is about 271.9836621530.

Adding to 20120022 its reverse (22002102), we get a palindrome (42122124).

The spelling of 20120022 in words is "twenty million, one hundred twenty thousand, twenty-two".