2001022122122 has 32 divisors (see below), whose sum is σ = 3014809812480. Its totient is φ = 996099249600.

The previous prime is 2001022122091. The next prime is 2001022122163. The reversal of 2001022122122 is 2212212201002.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 2001022122122.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1025638247 + ... + 1025640197.

It is an arithmetic number, because the mean of its divisors is an integer number (94212806640).

Almost surely, 2^{2001022122122} is an apocalyptic number.

2001022122122 is a deficient number, since it is larger than the sum of its proper divisors (1013787690358).

2001022122122 is a wasteful number, since it uses less digits than its factorization.

2001022122122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4446.

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 2001022122122 its reverse (2212212201002), we get a palindrome (4213234323124).

The spelling of 2001022122122 in words is "two trillion, one billion, twenty-two million, one hundred twenty-two thousand, one hundred twenty-two".