201121010212110 has 32 divisors (see below), whose sum is σ = 482695796419200. Its totient is φ = 53631672511008.

The previous prime is 201121010212103. The next prime is 201121010212141. The reversal of 201121010212110 is 11212010121102.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 201121010212110.

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, 34561060 + ... + 39958839.

It is an arithmetic number, because the mean of its divisors is an integer number (15084243638100).

Almost surely, 2^{201121010212110} is an apocalyptic number.

201121010212110 is an abundant number, since it is smaller than the sum of its proper divisors (281574786207090).

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

201121010212110 is a wasteful number, since it uses less digits than its factorization.

201121010212110 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74609872.

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

Adding to 201121010212110 its reverse (11212010121102), we get a palindrome (212333020333212).

The spelling of 201121010212110 in words is "two hundred one trillion, one hundred twenty-one billion, ten million, two hundred twelve thousand, one hundred ten".