11242121420 has 24 divisors (see below), whose sum is σ = 24997188384. Its totient is φ = 4232327936.

The previous prime is 11242121389. The next prime is 11242121441. The reversal of 11242121420 is 2412124211.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 11242121392 and 11242121401.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16532192 + ... + 16532871.

It is an arithmetic number, because the mean of its divisors is an integer number (1041549516).

Almost surely, 2^11242121420 is an apocalyptic number.

11242121420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11242121420 is an abundant number, since it is smaller than the sum of its proper divisors (13755066964).

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

11242121420 is a wasteful number, since it uses less digits than its factorization.

11242121420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33065089 (or 33065087 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 20.

Adding to 11242121420 its reverse (2412124211), we get a palindrome (13654245631).

The spelling of 11242121420 in words is "eleven billion, two hundred forty-two million, one hundred twenty-one thousand, four hundred twenty".