20022102 has 12 divisors (see below), whose sum is σ = 43381260. Its totient is φ = 6674028.

The previous prime is 20022097. The next prime is 20022103. The reversal of 20022102 is 20122002.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20022103) 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 5 ways as a sum of consecutive naturals, for example, 556152 + ... + 556187.

It is an arithmetic number, because the mean of its divisors is an integer number (3615105).

Almost surely, 2^20022102 is an apocalyptic number.

20022102 is an abundant number, since it is smaller than the sum of its proper divisors (23359158).

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

20022102 is a wasteful number, since it uses less digits than its factorization.

20022102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1112347 (or 1112344 counting only the distinct ones).

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

The square root of 20022102 is about 4474.6063514012. The cubic root of 20022102 is about 271.5417149460.

Adding to 20022102 its reverse (20122002), we get a palindrome (40144104).

The spelling of 20022102 in words is "twenty million, twenty-two thousand, one hundred two".