11021214420 has 144 divisors (see below), whose sum is σ = 34806429840. Its totient is φ = 2820261888.

The previous prime is 11021214409. The next prime is 11021214443. The reversal of 11021214420 is 2441212011.

11021214420 is a `hidden beast` number, since 1 + 10 + 21 + 214 + 420 = 666.

It can be written as a sum of positive squares in 8 ways, for example, as 2503401156 + 8517813264 = 50034^2 + 92292^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 11021214393 and 11021214402.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 474846 + ... + 497514.

Almost surely, 2^11021214420 is an apocalyptic number.

11021214420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 11021214420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17403214920).

11021214420 is an abundant number, since it is smaller than the sum of its proper divisors (23785215420).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

11021214420 is a wasteful number, since it uses less digits than its factorization.

11021214420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22794 (or 22789 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 11021214420 its reverse (2441212011), we get a palindrome (13462426431).

The spelling of 11021214420 in words is "eleven billion, twenty-one million, two hundred fourteen thousand, four hundred twenty".