20212120222110 has 96 divisors (see below), whose sum is σ = 53005438467072. Its totient is φ = 5343406548480.

The previous prime is 20212120222087. The next prime is 20212120222193. The reversal of 20212120222110 is 1122202121202.

It is a happy number.

20212120222110 is a `hidden beast` number, since 2 + 0 + 212 + 120 + 222 + 110 = 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, 14429712 + ... + 15768348.

It is an arithmetic number, because the mean of its divisors is an integer number (552139984032).

Almost surely, 2^{20212120222110} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20212120222110, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26502719233536).

20212120222110 is an abundant number, since it is smaller than the sum of its proper divisors (32793318244962).

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

20212120222110 is a wasteful number, since it uses less digits than its factorization.

20212120222110 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1340098 (or 1340095 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 20212120222110 its reverse (1122202121202), we get a palindrome (21334322343312).

The spelling of 20212120222110 in words is "twenty trillion, two hundred twelve billion, one hundred twenty million, two hundred twenty-two thousand, one hundred ten".