22001055 has 16 divisors (see below), whose sum is σ = 35566944. Its totient is φ = 11612160.

The previous prime is 22001047. The next prime is 22001071. The reversal of 22001055 is 55010022.

It is not a de Polignac number, because 22001055 - 2³ = 22001047 is a prime.

It is a super-2 number, since 2×22001055² = 968092842226050, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a plaindrome in base 11.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6106 + ... + 9015.

It is an arithmetic number, because the mean of its divisors is an integer number (2222934).

Almost surely, 2^22001055 is an apocalyptic number.

22001055 is a deficient number, since it is larger than the sum of its proper divisors (13565889).

22001055 is a wasteful number, since it uses less digits than its factorization.

22001055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15226.

The product of its (nonzero) digits is 100, while the sum is 15.

The square root of 22001055 is about 4690.5282218531. The cubic root of 22001055 is about 280.2084120114.

Adding to 22001055 its reverse (55010022), we get a palindrome (77011077).

The spelling of 22001055 in words is "twenty-two million, one thousand, fifty-five".