2221311001 has 32 divisors (see below), whose sum is σ = 2943924480. Its totient is φ = 1626034176.

The previous prime is 2221310977. The next prime is 2221311007. The reversal of 2221311001 is 1001131222.

It is not a de Polignac number, because 2221311001 - 2²¹ = 2219213849 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (13).

It is not an unprimeable number, because it can be changed into a prime (2221311007) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 79105 + ... + 103441.

It is an arithmetic number, because the mean of its divisors is an integer number (91997640).

Almost surely, 2^2221311001 is an apocalyptic number.

It is an amenable number.

2221311001 is a deficient number, since it is larger than the sum of its proper divisors (722613479).

2221311001 is a wasteful number, since it uses less digits than its factorization.

2221311001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24433.

The product of its (nonzero) digits is 24, while the sum is 13.

The square root of 2221311001 is about 47130.7861275409. The cubic root of 2221311001 is about 1304.7774904807. Note that the first 3 decimals are identical.

Adding to 2221311001 its reverse (1001131222), we get a palindrome (3222442223).

The spelling of 2221311001 in words is "two billion, two hundred twenty-one million, three hundred eleven thousand, one".