11254221020 has 48 divisors (see below), whose sum is σ = 27561374400. Its totient is φ = 3858587712.

The previous prime is 11254221019. The next prime is 11254221107. The reversal of 11254221020 is 2012245211.

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 = 11254220983 and 11254221001.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 813419 + ... + 827138.

It is an arithmetic number, because the mean of its divisors is an integer number (574195300).

Almost surely, 2^11254221020 is an apocalyptic number.

11254221020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11254221020 is an abundant number, since it is smaller than the sum of its proper divisors (16307153380).

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

11254221020 is a wasteful number, since it uses less digits than its factorization.

11254221020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1640587 (or 1640571 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 20.

Adding to 11254221020 its reverse (2012245211), we get a palindrome (13266466231).

The spelling of 11254221020 in words is "eleven billion, two hundred fifty-four million, two hundred twenty-one thousand, twenty".