201221013100012 has 12 divisors (see below), whose sum is σ = 353445831562320. Its totient is φ = 100236489796496.

The previous prime is 201221013099991. The next prime is 201221013100013. The reversal of 201221013100012 is 210001310122102.

It is a super-2 number, since 2×201221013100012² (a number of 29 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (201221013100013) by changing a digit.

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, 93504187168 + ... + 93504189319.

It is an arithmetic number, because the mean of its divisors is an integer number (29453819296860).

Almost surely, 2^{201221013100012} is an apocalyptic number.

It is an amenable number.

201221013100012 is a deficient number, since it is larger than the sum of its proper divisors (152224818462308).

201221013100012 is a wasteful number, since it uses less digits than its factorization.

201221013100012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 187008376760 (or 187008376758 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 16.

Adding to 201221013100012 its reverse (210001310122102), we get a palindrome (411222323222114).

The spelling of 201221013100012 in words is "two hundred one trillion, two hundred twenty-one billion, thirteen million, one hundred thousand, twelve".