201222220212020 has 384 divisors, whose sum is σ = 497614818742272. Its totient is φ = 66936056832000.

The previous prime is 201222220211977. The next prime is 201222220212071. The reversal of 201222220212020 is 20212022222102.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 201222220211983 and 201222220212001.

It is a congruent number.

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, 155144348012 + ... + 155144349308.

It is an arithmetic number, because the mean of its divisors is an integer number (1295871923808).

Almost surely, 2^{201222220212020} is an apocalyptic number.

201222220212020 is a gapful number since it is divisible by the number (20) 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 201222220212020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (248807409371136).

201222220212020 is an abundant number, since it is smaller than the sum of its proper divisors (296392598530252).

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

201222220212020 is a wasteful number, since it uses less digits than its factorization.

201222220212020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2471 (or 2469 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 20.

Adding to 201222220212020 its reverse (20212022222102), we get a palindrome (221434242434122).

The spelling of 201222220212020 in words is "two hundred one trillion, two hundred twenty-two billion, two hundred twenty million, two hundred twelve thousand, twenty".