221321102103123 has 32 divisors (see below), whose sum is σ = 333026649538560. Its totient is φ = 129507018063360.

The previous prime is 221321102103107. The next prime is 221321102103131. The reversal of 221321102103123 is 321301201123122.

It is not a de Polignac number, because 221321102103123 - 2⁴ = 221321102103107 is a prime.

It is a super-2 number, since 2×221321102103123² (a number of 29 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 221321102103093 and 221321102103102.

It is not an unprimeable number, because it can be changed into a prime (221321602103123) 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, 74663086 + ... + 77570732.

It is an arithmetic number, because the mean of its divisors is an integer number (10407082798080).

Almost surely, 2^{221321102103123} is an apocalyptic number.

221321102103123 is a deficient number, since it is larger than the sum of its proper divisors (111705547435437).

221321102103123 is a wasteful number, since it uses less digits than its factorization.

221321102103123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2987227.

The product of its (nonzero) digits is 864, while the sum is 24.

Adding to 221321102103123 its reverse (321301201123122), we get a palindrome (542622303226245).

The spelling of 221321102103123 in words is "two hundred twenty-one trillion, three hundred twenty-one billion, one hundred two million, one hundred three thousand, one hundred twenty-three".