201021122121112 has 16 divisors (see below), whose sum is σ = 378126548046000. Its totient is φ = 100187375975520.

The previous prime is 201021122121089. The next prime is 201021122121139. The reversal of 201021122121112 is 211121221120102.

It is a happy number.

201021122121112 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×201021122121112² (a number of 29 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 201021122121112.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 40398132987 + ... + 40398137962.

It is an arithmetic number, because the mean of its divisors is an integer number (23632909252875).

Almost surely, 2^{201021122121112} is an apocalyptic number.

It is an amenable number.

201021122121112 is a deficient number, since it is larger than the sum of its proper divisors (177105425924888).

201021122121112 is a wasteful number, since it uses less digits than its factorization.

201021122121112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80796271266 (or 80796271262 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 19.

Adding to 201021122121112 its reverse (211121221120102), we get a palindrome (412142343241214).

The spelling of 201021122121112 in words is "two hundred one trillion, twenty-one billion, one hundred twenty-two million, one hundred twenty-one thousand, one hundred twelve".