101001201020 has 48 divisors (see below), whose sum is σ = 219650175360. Its totient is φ = 38985473856.

The previous prime is 101001201013. The next prime is 101001201031. The reversal of 101001201020 is 20102100101.

It is a junction number, because it is equal to n+sod(n) for n = 101001200989 and 101001201007.

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, 636110 + ... + 778869.

It is an arithmetic number, because the mean of its divisors is an integer number (4576045320).

Almost surely, 2^101001201020 is an apocalyptic number.

101001201020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

101001201020 is an abundant number, since it is smaller than the sum of its proper divisors (118648974340).

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

101001201020 is a wasteful number, since it uses less digits than its factorization.

101001201020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1415114 (or 1415112 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 8.

Adding to 101001201020 its reverse (20102100101), we get a palindrome (121103301121).

The spelling of 101001201020 in words is "one hundred one billion, one million, two hundred one thousand, twenty".