20022221202210 has 256 divisors, whose sum is σ = 55306297221120. Its totient is φ = 5151208711680.

The previous prime is 20022221202197. The next prime is 20022221202229. The reversal of 20022221202210 is 1220212222002.

20022221202210 is a `hidden beast` number, since 20 + 0 + 222 + 212 + 0 + 2 + 210 = 666.

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

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, 2040788205 + ... + 2040798015.

It is an arithmetic number, because the mean of its divisors is an integer number (216040223520).

Almost surely, 2^{20022221202210} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20022221202210, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27653148610560).

20022221202210 is an abundant number, since it is smaller than the sum of its proper divisors (35284076018910).

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

20022221202210 is a wasteful number, since it uses less digits than its factorization.

20022221202210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12150 (or 12144 counting only the distinct ones).

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

Adding to 20022221202210 its reverse (1220212222002), we get a palindrome (21242433424212).

The spelling of 20022221202210 in words is "twenty trillion, twenty-two billion, two hundred twenty-one million, two hundred two thousand, two hundred ten".