201020221121012 has 48 divisors (see below), whose sum is σ = 372497398996800. Its totient is φ = 94656567651840.

The previous prime is 201020221121003. The next prime is 201020221121017. The reversal of 201020221121012 is 210121122020102.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201020221121017) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 564914 + ... + 20058902.

It is an arithmetic number, because the mean of its divisors is an integer number (7760362479100).

Almost surely, 2^{201020221121012} is an apocalyptic number.

It is an amenable number.

201020221121012 is a deficient number, since it is larger than the sum of its proper divisors (171477177875788).

201020221121012 is a wasteful number, since it uses less digits than its factorization.

201020221121012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19494816 (or 19494814 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 201020221121012 its reverse (210121122020102), we get a palindrome (411141343141114).

The spelling of 201020221121012 in words is "two hundred one trillion, twenty billion, two hundred twenty-one million, one hundred twenty-one thousand, twelve".