1101223311123 has 32 divisors (see below), whose sum is σ = 1599487948800. Its totient is φ = 673889263008.

The previous prime is 1101223311091. The next prime is 1101223311137. The reversal of 1101223311123 is 3211133221011.

It is not a de Polignac number, because 1101223311123 - 2⁵ = 1101223311091 is a prime.

It is a super-2 number, since 2×1101223311123² (a number of 25 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1101223311123.

It is not an unprimeable number, because it can be changed into a prime (1101223311143) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 713086 + ... + 1646492.

It is an arithmetic number, because the mean of its divisors is an integer number (49983998400).

Almost surely, 2^{1101223311123} is an apocalyptic number.

1101223311123 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

1101223311123 is a deficient number, since it is larger than the sum of its proper divisors (498264637677).

1101223311123 is an equidigital number, since it uses as much as digits as its factorization.

1101223311123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 933628 (or 933602 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 21.

Adding to 1101223311123 its reverse (3211133221011), we get a palindrome (4312356532134).

The spelling of 1101223311123 in words is "one trillion, one hundred one billion, two hundred twenty-three million, three hundred eleven thousand, one hundred twenty-three".