201121112211110 has 64 divisors (see below), whose sum is σ = 446040232848000. Its totient is φ = 63583000399872.

The previous prime is 201121112210989. The next prime is 201121112211113. The reversal of 201121112211110 is 11112211121102.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201121112211113) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 118106285 + ... + 119797064.

It is an arithmetic number, because the mean of its divisors is an integer number (6969378638250).

Almost surely, 2^{201121112211110} is an apocalyptic number.

201121112211110 is an abundant number, since it is smaller than the sum of its proper divisors (244919120636890).

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

201121112211110 is a wasteful number, since it uses less digits than its factorization.

201121112211110 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 237904305.

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

Adding to 201121112211110 its reverse (11112211121102), we get a palindrome (212233323332212).

The spelling of 201121112211110 in words is "two hundred one trillion, one hundred twenty-one billion, one hundred twelve million, two hundred eleven thousand, one hundred ten".