201000020122000 has 160 divisors (see below), whose sum is σ = 530217991555200. Its totient is φ = 73088644032000.

The previous prime is 201000020121959. The next prime is 201000020122001. The reversal of 201000020122000 is 221020000102.

It is a Harshad number since it is a multiple of its sum of digits (10).

It is not an unprimeable number, because it can be changed into a prime (201000020122001) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 813414466 + ... + 813661534.

It is an arithmetic number, because the mean of its divisors is an integer number (3313862447220).

Almost surely, 2^{201000020122000} is an apocalyptic number.

201000020122000 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 201000020122000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (265108995777600).

201000020122000 is an abundant number, since it is smaller than the sum of its proper divisors (329217971433200).

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

201000020122000 is a wasteful number, since it uses less digits than its factorization.

201000020122000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 284082 (or 284066 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 10.

Adding to 201000020122000 its reverse (221020000102), we get a palindrome (201221040122102).

The spelling of 201000020122000 in words is "two hundred one trillion, twenty million, one hundred twenty-two thousand".