1223450011155 has 16 divisors (see below), whose sum is σ = 2072668254624. Its totient is φ = 614123927040.

The previous prime is 1223450011141. The next prime is 1223450011211. The reversal of 1223450011155 is 5511100543221.

It is not a de Polignac number, because 1223450011155 - 2⁴ = 1223450011139 is a prime.

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, 2398921336 + ... + 2398921845.

It is an arithmetic number, because the mean of its divisors is an integer number (129541765914).

Almost surely, 2^{1223450011155} is an apocalyptic number.

1223450011155 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1223450011155 is a deficient number, since it is larger than the sum of its proper divisors (849218243469).

1223450011155 is a wasteful number, since it uses less digits than its factorization.

1223450011155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4797843206.

The product of its (nonzero) digits is 6000, while the sum is 30.

Adding to 1223450011155 its reverse (5511100543221), we get a palindrome (6734550554376).

The spelling of 1223450011155 in words is "one trillion, two hundred twenty-three billion, four hundred fifty million, eleven thousand, one hundred fifty-five".