1012111223 has 4 divisors (see below), whose sum is σ = 1047011640. Its totient is φ = 977210808.

The previous prime is 1012111189. The next prime is 1012111231. The reversal of 1012111223 is 3221112101.

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

It is a cyclic number.

It is not a de Polignac number, because 1012111223 - 2¹⁸ = 1011849079 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1012111198 and 1012111207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1012111123) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17450165 + ... + 17450222.

It is an arithmetic number, because the mean of its divisors is an integer number (261752910).

Almost surely, 2^1012111223 is an apocalyptic number.

1012111223 is a deficient number, since it is larger than the sum of its proper divisors (34900417).

1012111223 is an equidigital number, since it uses as much as digits as its factorization.

1012111223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34900416.

The product of its (nonzero) digits is 24, while the sum is 14.

The square root of 1012111223 is about 31813.6955256694. The cubic root of 1012111223 is about 1004.0208851467.

Adding to 1012111223 its reverse (3221112101), we get a palindrome (4233223324).

The spelling of 1012111223 in words is "one billion, twelve million, one hundred eleven thousand, two hundred twenty-three".