12101201020 has 24 divisors (see below), whose sum is σ = 25433251200. Its totient is φ = 4836532032.

The previous prime is 12101201003. The next prime is 12101201027. The reversal of 12101201020 is 2010210121.

12101201020 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×12101201020² (a number of 21 digits) contains 22 as substring.

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 = 12101200988 and 12101201006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12101201027) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 221580 + ... + 270739.

It is an arithmetic number, because the mean of its divisors is an integer number (1059718800).

Almost surely, 2^12101201020 is an apocalyptic number.

12101201020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12101201020 is an abundant number, since it is smaller than the sum of its proper divisors (13332050180).

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

12101201020 is a wasteful number, since it uses less digits than its factorization.

12101201020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 493557 (or 493555 counting only the distinct ones).

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

Adding to 12101201020 its reverse (2010210121), we get a palindrome (14111411141).

The spelling of 12101201020 in words is "twelve billion, one hundred one million, two hundred one thousand, twenty".