201001222121000 has 256 divisors, whose sum is σ = 556768471633920. Its totient is φ = 66464012160000.

The previous prime is 201001222120999. The next prime is 201001222121041. The reversal of 201001222121000 is 121222100102.

It is a Harshad number since it is a multiple of its sum of digits (14).

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 62000330 + ... + 65161670.

It is an arithmetic number, because the mean of its divisors is an integer number (2174876842320).

Almost surely, 2^{201001222121000} is an apocalyptic number.

201001222121000 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 201001222121000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (278384235816960).

201001222121000 is an abundant number, since it is smaller than the sum of its proper divisors (355767249512920).

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

201001222121000 is a wasteful number, since it uses less digits than its factorization.

201001222121000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3161693 (or 3161679 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 201001222121000 its reverse (121222100102), we get a palindrome (201122444221102).

The spelling of 201001222121000 in words is "two hundred one trillion, one billion, two hundred twenty-two million, one hundred twenty-one thousand".