221010033123 has 24 divisors (see below), whose sum is σ = 348340402800. Its totient is φ = 133913871360.

The previous prime is 221010033121. The next prime is 221010033161. The reversal of 221010033123 is 321330010122.

221010033123 is a `hidden beast` number, since 2 + 210 + 100 + 331 + 23 = 666.

It is not a de Polignac number, because 221010033123 - 2¹ = 221010033121 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 221010033096 and 221010033105.

It is not an unprimeable number, because it can be changed into a prime (221010033121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 161803 + ... + 684251.

It is an arithmetic number, because the mean of its divisors is an integer number (14514183450).

Almost surely, 2^221010033123 is an apocalyptic number.

221010033123 is a deficient number, since it is larger than the sum of its proper divisors (127330369677).

221010033123 is a wasteful number, since it uses less digits than its factorization.

221010033123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 526739 (or 526736 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

Adding to 221010033123 its reverse (321330010122), we get a palindrome (542340043245).

The spelling of 221010033123 in words is "two hundred twenty-one billion, ten million, thirty-three thousand, one hundred twenty-three".