20020022001 has 48 divisors (see below), whose sum is σ = 35806852224. Its totient is φ = 10516649472.

The previous prime is 20020021993. The next prime is 20020022051. The reversal of 20020022001 is 10022002002.

It is not a de Polignac number, because 20020022001 - 2³ = 20020021993 is a prime.

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

It is not an unprimeable number, because it can be changed into a prime (20020022051) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 171306 + ... + 263411.

It is an arithmetic number, because the mean of its divisors is an integer number (745976088).

Almost surely, 2^20020022001 is an apocalyptic number.

20020022001 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

20020022001 is a deficient number, since it is larger than the sum of its proper divisors (15786830223).

20020022001 is a wasteful number, since it uses less digits than its factorization.

20020022001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 434790 (or 434787 counting only the distinct ones).

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

Adding to 20020022001 its reverse (10022002002), we get a palindrome (30042024003).

The spelling of 20020022001 in words is "twenty billion, twenty million, twenty-two thousand, one".