2001123100022 has 4 divisors (see below), whose sum is σ = 3001684650036. Its totient is φ = 1000561550010.

The previous prime is 2001123100021. The next prime is 2001123100043. The reversal of 2001123100022 is 2200013211002.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a super-2 number, since 2×2001123100022² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2001123100021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 500280775004 + ... + 500280775007.

It is an arithmetic number, because the mean of its divisors is an integer number (750421162509).

Almost surely, 2^{2001123100022} is an apocalyptic number.

2001123100022 is a deficient number, since it is larger than the sum of its proper divisors (1000561550014).

2001123100022 is a wasteful number, since it uses less digits than its factorization.

2001123100022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1000561550013.

The product of its (nonzero) digits is 48, while the sum is 14.

Adding to 2001123100022 its reverse (2200013211002), we get a palindrome (4201136311024).

The spelling of 2001123100022 in words is "two trillion, one billion, one hundred twenty-three million, one hundred thousand, twenty-two".