1421112111 has 8 divisors (see below), whose sum is σ = 1941031344. Its totient is φ = 924300480.

The previous prime is 1421112101. The next prime is 1421112113. The reversal of 1421112111 is 1112111241.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1421112111 - 2¹⁵ = 1421079343 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1421112113) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5776756 + ... + 5777001.

It is an arithmetic number, because the mean of its divisors is an integer number (242628918).

Almost surely, 2^1421112111 is an apocalyptic number.

1421112111 is a deficient number, since it is larger than the sum of its proper divisors (519919233).

1421112111 is a wasteful number, since it uses less digits than its factorization.

1421112111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11553801.

The product of its digits is 16, while the sum is 15.

The square root of 1421112111 is about 37697.6406556166. The cubic root of 1421112111 is about 1124.2842158870.

Adding to 1421112111 its reverse (1112111241), we get a palindrome (2533223352).

The spelling of 1421112111 in words is "one billion, four hundred twenty-one million, one hundred twelve thousand, one hundred eleven".