20212112121110 has 256 divisors, whose sum is σ = 48975130165248. Its totient is φ = 5822243020800.

The previous prime is 20212112121083. The next prime is 20212112121133. The reversal of 20212112121110 is 1112121121202.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 724616324 + ... + 724644216.

It is an arithmetic number, because the mean of its divisors is an integer number (191309102208).

Almost surely, 2^{20212112121110} is an apocalyptic number.

20212112121110 is an abundant number, since it is smaller than the sum of its proper divisors (28763018044138).

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

20212112121110 is a wasteful number, since it uses less digits than its factorization.

20212112121110 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29479.

The product of its (nonzero) digits is 32, while the sum is 17.

Adding to 20212112121110 its reverse (1112121121202), we get a palindrome (21324233242312).

The spelling of 20212112121110 in words is "twenty trillion, two hundred twelve billion, one hundred twelve million, one hundred twenty-one thousand, one hundred ten".