101221200020012 has 12 divisors (see below), whose sum is σ = 177137686826520. Its totient is φ = 50610432355296.

The previous prime is 101221200020009. The next prime is 101221200020027. The reversal of 101221200020012 is 210020002122101.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 40550318 + ... + 42974069.

It is an arithmetic number, because the mean of its divisors is an integer number (14761473902210).

Almost surely, 2^{101221200020012} is an apocalyptic number.

It is an amenable number.

101221200020012 is a deficient number, since it is larger than the sum of its proper divisors (75916486806508).

101221200020012 is a wasteful number, since it uses less digits than its factorization.

101221200020012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 83827360 (or 83827358 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 101221200020012 its reverse (210020002122101), we get a palindrome (311241202142113).

The spelling of 101221200020012 in words is "one hundred one trillion, two hundred twenty-one billion, two hundred million, twenty thousand, twelve".