1111141421 has 8 divisors (see below), whose sum is σ = 1198613304. Its totient is φ = 1023955200.

The previous prime is 1111141391. The next prime is 1111141439. The reversal of 1111141421 is 1241411111.

It can be written as a sum of positive squares in 4 ways, for example, as 461605225 + 649536196 = 21485^2 + 25486^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 1111141421 - 2⁶ = 1111141357 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1111141421.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1111141481) 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, 63296 + ... + 78921.

It is an arithmetic number, because the mean of its divisors is an integer number (149826663).

Almost surely, 2^1111141421 is an apocalyptic number.

It is an amenable number.

1111141421 is a deficient number, since it is larger than the sum of its proper divisors (87471883).

1111141421 is a wasteful number, since it uses less digits than its factorization.

1111141421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 142831.

The product of its digits is 32, while the sum is 17.

The square root of 1111141421 is about 33333.7879785661. The cubic root of 1111141421 is about 1035.7535865529.

Adding to 1111141421 its reverse (1241411111), we get a palindrome (2352552532).

The spelling of 1111141421 in words is "one billion, one hundred eleven million, one hundred forty-one thousand, four hundred twenty-one".