20210022 has 24 divisors (see below), whose sum is σ = 50044176. Its totient is φ = 5774256.

The previous prime is 20209993. The next prime is 20210023. The reversal of 20210022 is 22001202.

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 = 20209986 and 20210013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20210023) 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 11 ways as a sum of consecutive naturals, for example, 80073 + ... + 80324.

It is an arithmetic number, because the mean of its divisors is an integer number (2085174).

Almost surely, 2^20210022 is an apocalyptic number.

20210022 is an abundant number, since it is smaller than the sum of its proper divisors (29834154).

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

20210022 is a wasteful number, since it uses less digits than its factorization.

20210022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 160412 (or 160409 counting only the distinct ones).

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

The square root of 20210022 is about 4495.5558054594. Note that the first 3 decimals coincide. The cubic root of 20210022 is about 272.3886007637.

Adding to 20210022 its reverse (22001202), we get a palindrome (42211224).

The spelling of 20210022 in words is "twenty million, two hundred ten thousand, twenty-two".