101201020 has 12 divisors (see below), whose sum is σ = 212522184. Its totient is φ = 40480400.

The previous prime is 101201003. The next prime is 101201041. The reversal of 101201020 is 20102101.

It is a junction number, because it is equal to n+sod(n) for n = 101200994 and 101201012.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 2530006 + ... + 2530045.

It is an arithmetic number, because the mean of its divisors is an integer number (17710182).

Almost surely, 2^101201020 is an apocalyptic number.

101201020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

101201020 is an abundant number, since it is smaller than the sum of its proper divisors (111321164).

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

101201020 is a wasteful number, since it uses less digits than its factorization.

101201020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5060060 (or 5060058 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 7.

The square root of 101201020 is about 10059.8717685664. The cubic root of 101201020 is about 466.0097071050.

Adding to 101201020 its reverse (20102101), we get a palindrome (121303121).

The spelling of 101201020 in words is "one hundred one million, two hundred one thousand, twenty".