201212110121 has 24 divisors (see below), whose sum is σ = 232861826400. Its totient is φ = 173252217600.

The previous prime is 201212110103. The next prime is 201212110133. The reversal of 201212110121 is 121011212102.

201212110121 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 201212110121 - 2¹⁴ = 201212093737 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 201212110096 and 201212110105.

It is not an unprimeable number, because it can be changed into a prime (201212110171) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 13996025 + ... + 14010393.

It is an arithmetic number, because the mean of its divisors is an integer number (9702576100).

Almost surely, 2^201212110121 is an apocalyptic number.

It is an amenable number.

201212110121 is a deficient number, since it is larger than the sum of its proper divisors (31649716279).

201212110121 is a wasteful number, since it uses less digits than its factorization.

201212110121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20501 (or 20490 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 201212110121 its reverse (121011212102), we get a palindrome (322223322223).

The spelling of 201212110121 in words is "two hundred one billion, two hundred twelve million, one hundred ten thousand, one hundred twenty-one".