1001223045 has 16 divisors (see below), whose sum is σ = 1779952320. Its totient is φ = 533985552.

The previous prime is 1001223029. The next prime is 1001223079. The reversal of 1001223045 is 5403221001.

It is not a de Polignac number, because 1001223045 - 2⁴ = 1001223029 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3708099 + ... + 3708368.

It is an arithmetic number, because the mean of its divisors is an integer number (111247020).

Almost surely, 2^1001223045 is an apocalyptic number.

1001223045 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1001223045 is a deficient number, since it is larger than the sum of its proper divisors (778729275).

1001223045 is an equidigital number, since it uses as much as digits as its factorization.

1001223045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7416481 (or 7416475 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 18.

The square root of 1001223045 is about 31642.1087318782. The cubic root of 1001223045 is about 1000.4075155752.

Adding to 1001223045 its reverse (5403221001), we get a palindrome (6404444046).

The spelling of 1001223045 in words is "one billion, one million, two hundred twenty-three thousand, forty-five".