20110121211110 has 32 divisors (see below), whose sum is σ = 41369949718272. Its totient is φ = 6894805782240.

The previous prime is 20110121211091. The next prime is 20110121211121. The reversal of 20110121211110 is 1111212101102.

It is a Harshad number since it is a multiple of its sum of digits (14).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3399845 + ... + 7195775.

It is an arithmetic number, because the mean of its divisors is an integer number (1292810928696).

Almost surely, 2^{20110121211110} is an apocalyptic number.

20110121211110 is an abundant number, since it is smaller than the sum of its proper divisors (21259828507162).

20110121211110 is a wasteful number, since it uses less digits than its factorization.

20110121211110 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3871628.

The product of its (nonzero) digits is 8, while the sum is 14.

Adding to 20110121211110 its reverse (1111212101102), we get a palindrome (21221333312212).

The spelling of 20110121211110 in words is "twenty trillion, one hundred ten billion, one hundred twenty-one million, two hundred eleven thousand, one hundred ten".