1011121223 has 24 divisors (see below), whose sum is σ = 1247771952. Its totient is φ = 814136064.

The previous prime is 1011121219. The next prime is 1011121261. The reversal of 1011121223 is 3221211101.

1011121223 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 1011121223 - 2² = 1011121219 is a prime.

It is a super-2 number, since 2×1011121223² = 2044732255202031458, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1011121198 and 1011121207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1011121283) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 663140 + ... + 664662.

It is an arithmetic number, because the mean of its divisors is an integer number (51990498).

Almost surely, 2^1011121223 is an apocalyptic number.

1011121223 is a deficient number, since it is larger than the sum of its proper divisors (236650729).

1011121223 is a wasteful number, since it uses less digits than its factorization.

1011121223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2351 (or 2344 counting only the distinct ones).

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

The square root of 1011121223 is about 31798.1323822642. The cubic root of 1011121223 is about 1003.6934162156.

Adding to 1011121223 its reverse (3221211101), we get a palindrome (4232332324).

The spelling of 1011121223 in words is "one billion, eleven million, one hundred twenty-one thousand, two hundred twenty-three".