20121212200101 has 32 divisors (see below), whose sum is σ = 29201117683968. Its totient is φ = 12276745850880.

The previous prime is 20121212200097. The next prime is 20121212200121. The reversal of 20121212200101 is 10100221212102.

It is not a de Polignac number, because 20121212200101 - 2² = 20121212200097 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20121212200121) 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, 37796016 + ... + 38324681.

It is an arithmetic number, because the mean of its divisors is an integer number (912534927624).

Almost surely, 2^{20121212200101} is an apocalyptic number.

It is an amenable number.

20121212200101 is a deficient number, since it is larger than the sum of its proper divisors (9079905483867).

20121212200101 is a wasteful number, since it uses less digits than its factorization.

20121212200101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76120861.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 20121212200101 its reverse (10100221212102), we get a palindrome (30221433412203).

The spelling of 20121212200101 in words is "twenty trillion, one hundred twenty-one billion, two hundred twelve million, two hundred thousand, one hundred one".