2101223001 has 32 divisors (see below), whose sum is σ = 3046699008. Its totient is φ = 1283143680.

The previous prime is 2101222973. The next prime is 2101223009. The reversal of 2101223001 is 1003221012.

It is not a de Polignac number, because 2101223001 - 2¹⁴ = 2101206617 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2101223009) 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 31 ways as a sum of consecutive naturals, for example, 340221 + ... + 346341.

It is an arithmetic number, because the mean of its divisors is an integer number (95209344).

Almost surely, 2^2101223001 is an apocalyptic number.

It is an amenable number.

2101223001 is a deficient number, since it is larger than the sum of its proper divisors (945476007).

2101223001 is a wasteful number, since it uses less digits than its factorization.

2101223001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6321.

The product of its (nonzero) digits is 24, while the sum is 12.

The square root of 2101223001 is about 45839.0990421932. The cubic root of 2101223001 is about 1280.8277119185.

Adding to 2101223001 its reverse (1003221012), we get a palindrome (3104444013).

The spelling of 2101223001 in words is "two billion, one hundred one million, two hundred twenty-three thousand, one".