201022020 has 48 divisors (see below), whose sum is σ = 625403520. Its totient is φ = 53605728.

The previous prime is 201022013. The next prime is 201022037. The reversal of 201022020 is 20220102.

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 = 201021993 and 201022011.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 185592 + ... + 186671.

It is an arithmetic number, because the mean of its divisors is an integer number (13029240).

Almost surely, 2^201022020 is an apocalyptic number.

201022020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

201022020 is an abundant number, since it is smaller than the sum of its proper divisors (424381500).

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

201022020 is a wasteful number, since it uses less digits than its factorization.

201022020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 372281 (or 372273 counting only the distinct ones).

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

The square root of 201022020 is about 14178.2234430129. The cubic root of 201022020 is about 585.7979905300.

Adding to 201022020 its reverse (20220102), we get a palindrome (221242122).

It can be divided in two parts, 20102 and 2020, that added together give a palindrome (22122).

The spelling of 201022020 in words is "two hundred one million, twenty-two thousand, twenty".