20121210110200 has 48 divisors (see below), whose sum is σ = 47922833367360. Its totient is φ = 7852179552000.

The previous prime is 20121210110167. The next prime is 20121210110207. The reversal of 20121210110200 is 201101212102.

It is a super-2 number, since 2×20121210110200² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20121210110207) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1226894856 + ... + 1226911255.

It is an arithmetic number, because the mean of its divisors is an integer number (998392361820).

Almost surely, 2^{20121210110200} is an apocalyptic number.

20121210110200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20121210110200 is an abundant number, since it is smaller than the sum of its proper divisors (27801623257160).

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

20121210110200 is a wasteful number, since it uses less digits than its factorization.

20121210110200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2453806168 (or 2453806159 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 20121210110200 its reverse (201101212102), we get a palindrome (20322311322302).

The spelling of 20121210110200 in words is "twenty trillion, one hundred twenty-one billion, two hundred ten million, one hundred ten thousand, two hundred".