201121111220110 has 32 divisors (see below), whose sum is σ = 362835710496000. Its totient is φ = 80266742384640.

The previous prime is 201121111220089. The next prime is 201121111220123. The reversal of 201121111220110 is 11022111121102.

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, 145141140 + ... + 146520280.

It is an arithmetic number, because the mean of its divisors is an integer number (11338615953000).

Almost surely, 2^{201121111220110} is an apocalyptic number.

201121111220110 is a deficient number, since it is larger than the sum of its proper divisors (161714599275890).

201121111220110 is a wasteful number, since it uses less digits than its factorization.

201121111220110 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1412076.

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

Adding to 201121111220110 its reverse (11022111121102), we get a palindrome (212143222341212).

The spelling of 201121111220110 in words is "two hundred one trillion, one hundred twenty-one billion, one hundred eleven million, two hundred twenty thousand, one hundred ten".