20122102221012 has 72 divisors (see below), whose sum is σ = 57401608249440. Its totient is φ = 5887344429120.

The previous prime is 20122102220971. The next prime is 20122102221019. The reversal of 20122102221012 is 21012220122102.

It is a happy number.

20122102221012 is a `hidden beast` number, since 201 + 221 + 0 + 22 + 210 + 12 = 666.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20122102221019) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 876081438 + ... + 876104405.

It is an arithmetic number, because the mean of its divisors is an integer number (797244559020).

Almost surely, 2^{20122102221012} is an apocalyptic number.

20122102221012 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

20122102221012 is an abundant number, since it is smaller than the sum of its proper divisors (37279506028428).

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

20122102221012 is a wasteful number, since it uses less digits than its factorization.

20122102221012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1752185893 (or 1752185888 counting only the distinct ones).

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

Adding to 20122102221012 its reverse (21012220122102), we get a palindrome (41134322343114).

The spelling of 20122102221012 in words is "twenty trillion, one hundred twenty-two billion, one hundred two million, two hundred twenty-one thousand, twelve".