20012211022122 has 192 divisors, whose sum is σ = 49601983242240. Its totient is φ = 5776304400000.

The previous prime is 20012211022103. The next prime is 20012211022201. The reversal of 20012211022122 is 22122011221002.

It is a happy number.

20012211022122 is a `hidden beast` number, since 200 + 1 + 221 + 1 + 0 + 221 + 22 = 666.

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

It is a junction number, because it is equal to n+sod(n) for n = 20012211022095 and 20012211022104.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 100926297 + ... + 101124387.

It is an arithmetic number, because the mean of its divisors is an integer number (258343662720).

Almost surely, 2^{20012211022122} is an apocalyptic number.

20012211022122 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 20012211022122, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24800991621120).

20012211022122 is an abundant number, since it is smaller than the sum of its proper divisors (29589772220118).

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

20012211022122 is a wasteful number, since it uses less digits than its factorization.

20012211022122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 198401 (or 198398 counting only the distinct ones).

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

Adding to 20012211022122 its reverse (22122011221002), we get a palindrome (42134222243124).

The spelling of 20012211022122 in words is "twenty trillion, twelve billion, two hundred eleven million, twenty-two thousand, one hundred twenty-two".