221310420122 has 16 divisors (see below), whose sum is σ = 371932009632. Its totient is φ = 97876843920.

The previous prime is 221310420103. The next prime is 221310420127. The reversal of 221310420122 is 221024013122.

It is a super-2 number, since 2×221310420122² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 221310420094 and 221310420103.

It is not an unprimeable number, because it can be changed into a prime (221310420127) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 135939248 + ... + 135940875.

It is an arithmetic number, because the mean of its divisors is an integer number (23245750602).

Almost surely, 2^221310420122 is an apocalyptic number.

221310420122 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

221310420122 is a deficient number, since it is larger than the sum of its proper divisors (150621589510).

221310420122 is a wasteful number, since it uses less digits than its factorization.

221310420122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 271880173.

The product of its (nonzero) digits is 384, while the sum is 20.

Adding to 221310420122 its reverse (221024013122), we get a palindrome (442334433244).

The spelling of 221310420122 in words is "two hundred twenty-one billion, three hundred ten million, four hundred twenty thousand, one hundred twenty-two".