12020210100 has 54 divisors (see below), whose sum is σ = 37676683590. Its totient is φ = 3205389120.

The previous prime is 12020210057. The next prime is 12020210119. The reversal of 12020210100 is 101202021.

It can be written as a sum of positive squares in 3 ways, for example, as 170145936 + 11850064164 = 13044^2 + 108858^2 .

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 6676995 + ... + 6678794.

Almost surely, 2^12020210100 is an apocalyptic number.

12020210100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12020210100 is an abundant number, since it is smaller than the sum of its proper divisors (25656473490).

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

12020210100 is a wasteful number, since it uses less digits than its factorization.

12020210100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13355809 (or 13355799 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 9.

Adding to 12020210100 its reverse (101202021), we get a palindrome (12121412121).

The spelling of 12020210100 in words is "twelve billion, twenty million, two hundred ten thousand, one hundred".