20121202020100 has 36 divisors (see below), whose sum is σ = 44678427192784. Its totient is φ = 7861306834080.

The previous prime is 20121202020079. The next prime is 20121202020119. The reversal of 20121202020100 is 102020212102.

It is a happy 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 11 ways as a sum of consecutive naturals, for example, 2339670354 + ... + 2339678953.

Almost surely, 2^{20121202020100} is an apocalyptic number.

20121202020100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20121202020100 is an abundant number, since it is smaller than the sum of its proper divisors (24557225172684).

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

20121202020100 is a wasteful number, since it uses less digits than its factorization.

20121202020100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4679349364 (or 4679349357 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 20121202020100 its reverse (102020212102), we get a palindrome (20223222232202).

The spelling of 20121202020100 in words is "twenty trillion, one hundred twenty-one billion, two hundred two million, twenty thousand, one hundred".