221234414121 has 12 divisors (see below), whose sum is σ = 365212366272. Its totient is φ = 126419665176.

The previous prime is 221234414083. The next prime is 221234414123. The reversal of 221234414121 is 121414432122.

221234414121 is a `hidden beast` number, since 2 + 2 + 1 + 234 + 414 + 12 + 1 = 666.

It is not a de Polignac number, because 221234414121 - 2¹¹ = 221234412073 is a prime.

It is not an unprimeable number, because it can be changed into a prime (221234414123) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1755828621 + ... + 1755828746.

It is an arithmetic number, because the mean of its divisors is an integer number (30434363856).

Almost surely, 2^221234414121 is an apocalyptic number.

221234414121 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

221234414121 is a deficient number, since it is larger than the sum of its proper divisors (143977952151).

221234414121 is a wasteful number, since it uses less digits than its factorization.

221234414121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3511657380 (or 3511657377 counting only the distinct ones).

The product of its digits is 3072, while the sum is 27.

Adding to 221234414121 its reverse (121414432122), we get a palindrome (342648846243).

The spelling of 221234414121 in words is "two hundred twenty-one billion, two hundred thirty-four million, four hundred fourteen thousand, one hundred twenty-one".