20022001222212 has 288 divisors, whose sum is σ = 56203404042240. Its totient is φ = 5959566627840.

The previous prime is 20022001222169. The next prime is 20022001222217. The reversal of 20022001222212 is 21222210022002.

20022001222212 is a `hidden beast` number, since 200 + 220 + 0 + 1 + 22 + 221 + 2 = 666.

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

It is not an unprimeable number, because it can be changed into a prime (20022001222217) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 2265184089 + ... + 2265192927.

It is an arithmetic number, because the mean of its divisors is an integer number (195150708480).

Almost surely, 2^{20022001222212} is an apocalyptic number.

20022001222212 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20022001222212, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28101702021120).

20022001222212 is an abundant number, since it is smaller than the sum of its proper divisors (36181402820028).

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

20022001222212 is a wasteful number, since it uses less digits than its factorization.

20022001222212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9423 (or 9418 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 18.

Adding to 20022001222212 its reverse (21222210022002), we get a palindrome (41244211244214).

The spelling of 20022001222212 in words is "twenty trillion, twenty-two billion, one million, two hundred twenty-two thousand, two hundred twelve".