201111110021110 has 16 divisors (see below), whose sum is σ = 365203537845696. Its totient is φ = 79732546273408.

The previous prime is 201111110021099. The next prime is 201111110021123. The reversal of 201111110021110 is 11120011111102.

It is a super-2 number, since 2×201111110021110² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 88987215694 + ... + 88987217953.

It is an arithmetic number, because the mean of its divisors is an integer number (22825221115356).

Almost surely, 2^{201111110021110} is an apocalyptic number.

201111110021110 is a deficient number, since it is larger than the sum of its proper divisors (164092427824586).

201111110021110 is a wasteful number, since it uses less digits than its factorization.

201111110021110 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 177974433767.

The product of its (nonzero) digits is 4, while the sum is 13.

Adding to 201111110021110 its reverse (11120011111102), we get a palindrome (212231121132212).

The spelling of 201111110021110 in words is "two hundred one trillion, one hundred eleven billion, one hundred ten million, twenty-one thousand, one hundred ten".