20112221122110 has 96 divisors (see below), whose sum is σ = 56315098240128. Its totient is φ = 4950623301120.

The previous prime is 20112221122073. The next prime is 20112221122129. The reversal of 20112221122110 is 1122112221102.

20112221122110 is a `hidden beast` number, since 201 + 1 + 22 + 211 + 221 + 10 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 123556075 + ... + 123718745.

It is an arithmetic number, because the mean of its divisors is an integer number (586615606668).

Almost surely, 2^{20112221122110} is an apocalyptic number.

20112221122110 is an abundant number, since it is smaller than the sum of its proper divisors (36202877118018).

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

20112221122110 is a wasteful number, since it uses less digits than its factorization.

20112221122110 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 268370 (or 268367 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

Adding to 20112221122110 its reverse (1122112221102), we get a palindrome (21234333343212).

The spelling of 20112221122110 in words is "twenty trillion, one hundred twelve billion, two hundred twenty-one million, one hundred twenty-two thousand, one hundred ten".