10121201020 has 48 divisors (see below), whose sum is σ = 24702612480. Its totient is φ = 3411307584.

The previous prime is 10121201003. The next prime is 10121201033. The reversal of 10121201020 is 2010212101.

10121201020 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (10).

It is a junction number, because it is equal to n+sod(n) for n = 10121200988 and 10121201006.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 604404 + ... + 620923.

It is an arithmetic number, because the mean of its divisors is an integer number (514637760).

Almost surely, 2^10121201020 is an apocalyptic number.

10121201020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

10121201020 is an abundant number, since it is smaller than the sum of its proper divisors (14581411460).

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

10121201020 is a wasteful number, since it uses less digits than its factorization.

10121201020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1225402 (or 1225400 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 10.

Adding to 10121201020 its reverse (2010212101), we get a palindrome (12131413121).

The spelling of 10121201020 in words is "ten billion, one hundred twenty-one million, two hundred one thousand, twenty".