2221001205 has 8 divisors (see below), whose sum is σ = 3553601952. Its totient is φ = 1184533968.

The previous prime is 2221001203. The next prime is 2221001207. The reversal of 2221001205 is 5021001222.

It is an interprime number because it is at equal distance from previous prime (2221001203) and next prime (2221001207).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2221001205 - 2¹ = 2221001203 is a prime.

It is a super-2 number, since 2×2221001205² = 9865692705222904050, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (15), and also a Moran number because the ratio is a prime number: 148066747 = 2221001205 / (2 + 2 + 2 + 1 + 0 + 0 + 1 + 2 + 0 + 5).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2221001203) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 74033359 + ... + 74033388.

It is an arithmetic number, because the mean of its divisors is an integer number (444200244).

Almost surely, 2^2221001205 is an apocalyptic number.

It is an amenable number.

2221001205 is a deficient number, since it is larger than the sum of its proper divisors (1332600747).

2221001205 is a wasteful number, since it uses less digits than its factorization.

2221001205 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 148066755.

The product of its (nonzero) digits is 80, while the sum is 15.

The square root of 2221001205 is about 47127.4994562623. The cubic root of 2221001205 is about 1304.7168305611.

Adding to 2221001205 its reverse (5021001222), we get a palindrome (7242002427).

The spelling of 2221001205 in words is "two billion, two hundred twenty-one million, one thousand, two hundred five".