11142021 has 16 divisors (see below), whose sum is σ = 17160768. Its totient is φ = 6355200.

The previous prime is 11142013. The next prime is 11142029. The reversal of 11142021 is 12024111.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (11142013) and next prime (11142029).

It is not a de Polignac number, because 11142021 - 2³ = 11142013 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 11141988 and 11142006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11142029) 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, 9370 + ... + 10491.

It is an arithmetic number, because the mean of its divisors is an integer number (1072548).

Almost surely, 2^11142021 is an apocalyptic number.

11142021 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

11142021 is a deficient number, since it is larger than the sum of its proper divisors (6018747).

11142021 is a wasteful number, since it uses less digits than its factorization.

11142021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19892.

The product of its (nonzero) digits is 16, while the sum is 12.

The square root of 11142021 is about 3337.9665965974. The cubic root of 11142021 is about 223.3510460940.

Adding to 11142021 its reverse (12024111), we get a palindrome (23166132).

The spelling of 11142021 in words is "eleven million, one hundred forty-two thousand, twenty-one".