12100210000021 has 32 divisors (see below), whose sum is σ = 14721291527040. Its totient is φ = 9799118035200.

The previous prime is 12100210000019. The next prime is 12100210000027. The reversal of 12100210000021 is 12000001200121.

It is not a de Polignac number, because 12100210000021 - 2¹ = 12100210000019 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12100209999962 and 12100210000007.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12100210000027) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 12624111 + ... + 13548748.

It is an arithmetic number, because the mean of its divisors is an integer number (460040360220).

Almost surely, 2^{12100210000021} is an apocalyptic number.

12100210000021 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

12100210000021 is a deficient number, since it is larger than the sum of its proper divisors (2621081527019).

12100210000021 is a wasteful number, since it uses less digits than its factorization.

12100210000021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26172997.

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

Adding to 12100210000021 its reverse (12000001200121), we get a palindrome (24100211200142).

The spelling of 12100210000021 in words is "twelve trillion, one hundred billion, two hundred ten million, twenty-one", and thus it is an aban number.