1001226055 has 4 divisors (see below), whose sum is σ = 1201471272. Its totient is φ = 800980840.

The previous prime is 1001226053. The next prime is 1001226089. The reversal of 1001226055 is 5506221001.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 1001226055 - 2¹ = 1001226053 is a prime.

It is a super-2 number, since 2×1001226055² = 2004907226421726050, which contains 22 as substring.

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1001226053) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 100122601 + ... + 100122610.

It is an arithmetic number, because the mean of its divisors is an integer number (300367818).

Almost surely, 2^1001226055 is an apocalyptic number.

1001226055 is a deficient number, since it is larger than the sum of its proper divisors (200245217).

1001226055 is an equidigital number, since it uses as much as digits as its factorization.

1001226055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 200245216.

The product of its (nonzero) digits is 600, while the sum is 22.

The square root of 1001226055 is about 31642.1562950441. The cubic root of 1001226055 is about 1000.4085180902.

Adding to 1001226055 its reverse (5506221001), we get a palindrome (6507447056).

The spelling of 1001226055 in words is "one billion, one million, two hundred twenty-six thousand, fifty-five".