2001222100101 has 12 divisors (see below), whose sum is σ = 3103936318752. Its totient is φ = 1143555485688.

The previous prime is 2001222100049. The next prime is 2001222100151. The reversal of 2001222100101 is 1010012221002.

It is not a de Polignac number, because 2001222100101 - 2³⁷ = 1863783146629 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2001222100151) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6806877745 + ... + 6806878038.

It is an arithmetic number, because the mean of its divisors is an integer number (258661359896).

Almost surely, 2^{2001222100101} is an apocalyptic number.

2001222100101 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

2001222100101 is a deficient number, since it is larger than the sum of its proper divisors (1102714218651).

2001222100101 is a wasteful number, since it uses less digits than its factorization.

2001222100101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13613755800 (or 13613755793 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 2001222100101 its reverse (1010012221002), we get a palindrome (3011234321103).

The spelling of 2001222100101 in words is "two trillion, one billion, two hundred twenty-two million, one hundred thousand, one hundred one".