201022021120 has 80 divisors (see below), whose sum is σ = 485777622528. Its totient is φ = 79775539200.

The previous prime is 201022021111. The next prime is 201022021133. The reversal of 201022021120 is 21120220102.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (80).

It is a self number, because there is not a number n which added to its sum of digits gives 201022021120.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15970 + ... + 634270.

Almost surely, 2^201022021120 is an apocalyptic number.

201022021120 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 201022021120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (242888811264).

201022021120 is an abundant number, since it is smaller than the sum of its proper divisors (284755601408).

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

201022021120 is an equidigital number, since it uses as much as digits as its factorization.

201022021120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 618451 (or 618435 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 201022021120 its reverse (21120220102), we get a palindrome (222142241222).

The spelling of 201022021120 in words is "two hundred one billion, twenty-two million, twenty-one thousand, one hundred twenty".