206101020 has 48 divisors (see below), whose sum is σ = 595703808. Its totient is φ = 53186880.

The previous prime is 206101009. The next prime is 206101067. The reversal of 206101020 is 20101602.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a junction number, because it is equal to n+sod(n) for n = 206100987 and 206101005.

It is a congruent number.

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, 53544 + ... + 57263.

It is an arithmetic number, because the mean of its divisors is an integer number (12410496).

Almost surely, 2^206101020 is an apocalyptic number.

206101020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

206101020 is an abundant number, since it is smaller than the sum of its proper divisors (389602788).

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

206101020 is a wasteful number, since it uses less digits than its factorization.

206101020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 110850 (or 110848 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 12.

The square root of 206101020 is about 14356.2188615248. The cubic root of 206101020 is about 590.6905827345.

Adding to 206101020 its reverse (20101602), we get a palindrome (226202622).

The spelling of 206101020 in words is "two hundred six million, one hundred one thousand, twenty".