221302202220123 has 16 divisors (see below), whose sum is σ = 295503828787200. Its totient is φ = 147317847573600.

The previous prime is 221302202220109. The next prime is 221302202220139. The reversal of 221302202220123 is 321022202203122.

It is not a de Polignac number, because 221302202220123 - 2¹⁶ = 221302202154587 is a prime.

It is a super-2 number, since 2×221302202220123² (a number of 29 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 221302202220093 and 221302202220102.

It is not an unprimeable number, because it can be changed into a prime (221302202220103) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14307028 + ... + 25442001.

It is an arithmetic number, because the mean of its divisors is an integer number (18468989299200).

Almost surely, 2^{221302202220123} is an apocalyptic number.

221302202220123 is a deficient number, since it is larger than the sum of its proper divisors (74201626567077).

221302202220123 is a wasteful number, since it uses less digits than its factorization.

221302202220123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39751762.

The product of its (nonzero) digits is 2304, while the sum is 24.

Adding to 221302202220123 its reverse (321022202203122), we get a palindrome (542324404423245).

The spelling of 221302202220123 in words is "two hundred twenty-one trillion, three hundred two billion, two hundred two million, two hundred twenty thousand, one hundred twenty-three".