11220057 has 6 divisors (see below), whose sum is σ = 16206762. Its totient is φ = 7480032.

The previous prime is 11220037. The next prime is 11220073. The reversal of 11220057 is 75002211.

11220057 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 10830681 + 389376 = 3291^2 + 624^2 .

It is not a de Polignac number, because 11220057 - 2⁸ = 11219801 is a prime.

It is not an unprimeable number, because it can be changed into a prime (11220007) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 623328 + ... + 623345.

It is an arithmetic number, because the mean of its divisors is an integer number (2701127).

Almost surely, 2^11220057 is an apocalyptic number.

It is an amenable number.

11220057 is a deficient number, since it is larger than the sum of its proper divisors (4986705).

11220057 is a wasteful number, since it uses less digits than its factorization.

11220057 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1246679 (or 1246676 counting only the distinct ones).

The product of its (nonzero) digits is 140, while the sum is 18.

The square root of 11220057 is about 3349.6353532885. The cubic root of 11220057 is about 223.8712655810.

Adding to 11220057 its reverse (75002211), we get a palindrome (86222268).

The spelling of 11220057 in words is "eleven million, two hundred twenty thousand, fifty-seven".