201121020221112 has 64 divisors (see below), whose sum is σ = 564200881869600. Its totient is φ = 66376574323200.

The previous prime is 201121020220999. The next prime is 201121020221123. The reversal of 201121020221112 is 211122020121102.

201121020221112 is a `hidden beast` number, since 20 + 11 + 210 + 202 + 211 + 12 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4609462513 + ... + 4609506144.

Almost surely, 2^{201121020221112} is an apocalyptic number.

It is an amenable number.

201121020221112 is an abundant number, since it is smaller than the sum of its proper divisors (363079861648488).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

201121020221112 is a wasteful number, since it uses less digits than its factorization.

201121020221112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9218968773 (or 9218968763 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

Adding to 201121020221112 its reverse (211122020121102), we get a palindrome (412243040342214).

The spelling of 201121020221112 in words is "two hundred one trillion, one hundred twenty-one billion, twenty million, two hundred twenty-one thousand, one hundred twelve".