201022101220122 has 192 divisors, whose sum is σ = 550614035811840. Its totient is φ = 51577651487232.

The previous prime is 201022101220121. The next prime is 201022101220153. The reversal of 201022101220122 is 221022101220102.

It is a happy number.

201022101220122 is a `hidden beast` number, since 201 + 0 + 22 + 101 + 220 + 122 = 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 = 201022101220095 and 201022101220104.

It is not an unprimeable number, because it can be changed into a prime (201022101220121) 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, 508226043 + ... + 508621425.

It is an arithmetic number, because the mean of its divisors is an integer number (2867781436520).

Almost surely, 2^{201022101220122} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 201022101220122, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (275307017905920).

201022101220122 is an abundant number, since it is smaller than the sum of its proper divisors (349591934591718).

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

201022101220122 is a wasteful number, since it uses less digits than its factorization.

201022101220122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 403837 (or 403834 counting only the distinct ones).

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

Adding to 201022101220122 its reverse (221022101220102), we get a palindrome (422044202440224).

The spelling of 201022101220122 in words is "two hundred one trillion, twenty-two billion, one hundred one million, two hundred twenty thousand, one hundred twenty-two".