2001000121022 has 32 divisors (see below), whose sum is σ = 3434528950272. Its totient is φ = 856511322624.

The previous prime is 2001000121013. The next prime is 2001000121063. The reversal of 2001000121022 is 2201210001002.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 2001000120994 and 2001000121012.

It is a congruent number.

It is an unprimeable number.

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 in 15 ways as a sum of consecutive naturals, for example, 43304543 + ... + 43350725.

It is an arithmetic number, because the mean of its divisors is an integer number (107329029696).

Almost surely, 2^{2001000121022} is an apocalyptic number.

2001000121022 is a deficient number, since it is larger than the sum of its proper divisors (1433528829250).

2001000121022 is a wasteful number, since it uses less digits than its factorization.

2001000121022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49952.

The product of its (nonzero) digits is 16, while the sum is 11.

Adding to 2001000121022 its reverse (2201210001002), we get a palindrome (4202210122024).

The spelling of 2001000121022 in words is "two trillion, one billion, one hundred twenty-one thousand, twenty-two".