201020012220 has 48 divisors (see below), whose sum is σ = 568658690208. Its totient is φ = 53052702720.

The previous prime is 201020012201. The next prime is 201020012231. The reversal of 201020012220 is 22210020102.

It is a super-3 number, since 3×201020012220³ (a number of 35 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a junction number, because it is equal to n+sod(n) for n = 201020012196 and 201020012205.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17263941 + ... + 17275580.

It is an arithmetic number, because the mean of its divisors is an integer number (11847056046).

Almost surely, 2^201020012220 is an apocalyptic number.

201020012220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

201020012220 is an abundant number, since it is smaller than the sum of its proper divisors (367638677988).

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

201020012220 is a wasteful number, since it uses less digits than its factorization.

201020012220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34539630 (or 34539628 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 12.

Adding to 201020012220 its reverse (22210020102), we get a palindrome (223230032322).

The spelling of 201020012220 in words is "two hundred one billion, twenty million, twelve thousand, two hundred twenty".