20112101212110 has 64 divisors (see below), whose sum is σ = 50036916713472. Its totient is φ = 5169505954176.

The previous prime is 20112101212061. The next prime is 20112101212123. The reversal of 20112101212110 is 1121210121102.

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 20112101212110.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 84549502 + ... + 84787041.

It is an arithmetic number, because the mean of its divisors is an integer number (781826823648).

Almost surely, 2^{20112101212110} is an apocalyptic number.

20112101212110 is an abundant number, since it is smaller than the sum of its proper divisors (29924815501362).

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

20112101212110 is a wasteful number, since it uses less digits than its factorization.

20112101212110 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 169336697.

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

Adding to 20112101212110 its reverse (1121210121102), we get a palindrome (21233311333212).

The spelling of 20112101212110 in words is "twenty trillion, one hundred twelve billion, one hundred one million, two hundred twelve thousand, one hundred ten".