2001022122 has 16 divisors (see below), whose sum is σ = 4365866592. Its totient is φ = 606370320.

The previous prime is 2001022117. The next prime is 2001022129. The reversal of 2001022122 is 2212201002.

It is a junction number, because it is equal to n+sod(n) for n = 2001022098 and 2001022107.

It is not an unprimeable number, because it can be changed into a prime (2001022129) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15159193 + ... + 15159324.

It is an arithmetic number, because the mean of its divisors is an integer number (272866662).

Almost surely, 2^2001022122 is an apocalyptic number.

2001022122 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

2001022122 is an abundant number, since it is smaller than the sum of its proper divisors (2364844470).

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

2001022122 is a wasteful number, since it uses less digits than its factorization.

2001022122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30318533.

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

The square root of 2001022122 is about 44732.7857616760. The cubic root of 2001022122 is about 1260.1356455124.

Adding to 2001022122 its reverse (2212201002), we get a palindrome (4213223124).

The spelling of 2001022122 in words is "two billion, one million, twenty-two thousand, one hundred twenty-two".