201000001122 has 32 divisors (see below), whose sum is σ = 447727685760. Its totient is φ = 66840847920.

The previous prime is 201000001073. The next prime is 201000001123. The reversal of 201000001122 is 221100000102.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is not an unprimeable number, because it can be changed into a prime (201000001123) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4397958 + ... + 4443425.

It is an arithmetic number, because the mean of its divisors is an integer number (13991490180).

Almost surely, 2^201000001122 is an apocalyptic number.

201000001122 is an abundant number, since it is smaller than the sum of its proper divisors (246727684638).

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

201000001122 is a wasteful number, since it uses less digits than its factorization.

201000001122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8841815 (or 8841809 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 9.

Adding to 201000001122 its reverse (221100000102), we get a palindrome (422100001224).

The spelling of 201000001122 in words is "two hundred one billion, one thousand, one hundred twenty-two".