221211141123 has 32 divisors (see below), whose sum is σ = 352658128896. Its totient is φ = 120594643488.

The previous prime is 221211141121. The next prime is 221211141163. The reversal of 221211141123 is 321141112122.

It is not a de Polignac number, because 221211141123 - 2¹ = 221211141121 is a prime.

It is a super-2 number, since 2×221211141123² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a self number, because there is not a number n which added to its sum of digits gives 221211141123.

It is not an unprimeable number, because it can be changed into a prime (221211141121) 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, 412915 + ... + 782892.

It is an arithmetic number, because the mean of its divisors is an integer number (11020566528).

Almost surely, 2^221211141123 is an apocalyptic number.

221211141123 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

221211141123 is a deficient number, since it is larger than the sum of its proper divisors (131446987773).

221211141123 is a wasteful number, since it uses less digits than its factorization.

221211141123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1196223.

The product of its digits is 192, while the sum is 21.

Adding to 221211141123 its reverse (321141112122), we get a palindrome (542352253245).

The spelling of 221211141123 in words is "two hundred twenty-one billion, two hundred eleven million, one hundred forty-one thousand, one hundred twenty-three".