201121111211120 has 80 divisors (see below), whose sum is σ = 479091211342848. Its totient is φ = 78483602085120.

The previous prime is 201121111211077. The next prime is 201121111211147. The reversal of 201121111211120 is 21112111121102.

It is a tau number, because it is divible by the number of its divisors (80).

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, 84826874 + ... + 87165593.

Almost surely, 2^{201121111211120} is an apocalyptic number.

201121111211120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

201121111211120 is an abundant number, since it is smaller than the sum of its proper divisors (277970100131728).

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

201121111211120 is a wasteful number, since it uses less digits than its factorization.

201121111211120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 171992838 (or 171992832 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 17.

Adding to 201121111211120 its reverse (21112111121102), we get a palindrome (222233222332222).

The spelling of 201121111211120 in words is "two hundred one trillion, one hundred twenty-one billion, one hundred eleven million, two hundred eleven thousand, one hundred twenty".