421122111 has 16 divisors (see below), whose sum is σ = 600203520. Its totient is φ = 261990080.

The previous prime is 421122109. The next prime is 421122131. The reversal of 421122111 is 111221124.

It is a cyclic number.

It is not a de Polignac number, because 421122111 - 2¹ = 421122109 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (421122131) 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, 71601 + ... + 77258.

It is an arithmetic number, because the mean of its divisors is an integer number (37512720).

Almost surely, 2^421122111 is an apocalyptic number.

421122111 is a gapful number since it is divisible by the number (41) formed by its first and last digit.

421122111 is a deficient number, since it is larger than the sum of its proper divisors (179081409).

421122111 is a wasteful number, since it uses less digits than its factorization.

421122111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 148926.

The product of its digits is 32, while the sum is 15.

The square root of 421122111 is about 20521.2599759372. The cubic root of 421122111 is about 749.5535778847.

Adding to 421122111 its reverse (111221124), we get a palindrome (532343235).

The spelling of 421122111 in words is "four hundred twenty-one million, one hundred twenty-two thousand, one hundred eleven".