1002111223 has 16 divisors (see below), whose sum is σ = 1081317600. Its totient is φ = 925295616.

The previous prime is 1002111203. The next prime is 1002111277. The reversal of 1002111223 is 3221112001.

It is a cyclic number.

It is not a de Polignac number, because 1002111223 - 2⁵ = 1002111191 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1002111203) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 242428 + ... + 246526.

It is an arithmetic number, because the mean of its divisors is an integer number (67582350).

Almost surely, 2^1002111223 is an apocalyptic number.

1002111223 is a deficient number, since it is larger than the sum of its proper divisors (79206377).

1002111223 is a wasteful number, since it uses less digits than its factorization.

1002111223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4386.

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

The square root of 1002111223 is about 31656.1403680234. The cubic root of 1002111223 is about 1000.7032463287.

Adding to 1002111223 its reverse (3221112001), we get a palindrome (4223223224).

It can be divided in two parts, 1002 and 111223, that added together give a square (112225 = 335²).

The spelling of 1002111223 in words is "one billion, two million, one hundred eleven thousand, two hundred twenty-three".