201210020111121 has 16 divisors (see below), whose sum is σ = 306611533715328. Its totient is φ = 114974983555200.

The previous prime is 201210020111047. The next prime is 201210020111137. The reversal of 201210020111121 is 121111020012102.

It is a happy number.

It is not a de Polignac number, because 201210020111121 - 2¹³ = 201210020102929 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 201210020111121.

It is not an unprimeable number, because it can be changed into a prime (201210020116121) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 89310660 + ... + 91535861.

It is an arithmetic number, because the mean of its divisors is an integer number (19163220857208).

Almost surely, 2^{201210020111121} is an apocalyptic number.

201210020111121 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

201210020111121 is a deficient number, since it is larger than the sum of its proper divisors (105401513604207).

201210020111121 is a wasteful number, since it uses less digits than its factorization.

201210020111121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 180899512.

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 201210020111121 its reverse (121111020012102), we get a palindrome (322321040123223).

The spelling of 201210020111121 in words is "two hundred one trillion, two hundred ten billion, twenty million, one hundred eleven thousand, one hundred twenty-one".