1100220051553 has 32 divisors (see below), whose sum is σ = 1300619718144. Its totient is φ = 911000742912.

The previous prime is 1100220051551. The next prime is 1100220051577. The reversal of 1100220051553 is 3551500220011.

It is a cyclic number.

It is not a de Polignac number, because 1100220051553 - 2¹ = 1100220051551 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1100220051551) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 55576425 + ... + 55596217.

It is an arithmetic number, because the mean of its divisors is an integer number (40644366192).

Almost surely, 2^{1100220051553} is an apocalyptic number.

It is an amenable number.

1100220051553 is a deficient number, since it is larger than the sum of its proper divisors (200399666591).

1100220051553 is a wasteful number, since it uses less digits than its factorization.

1100220051553 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21361.

The product of its (nonzero) digits is 1500, while the sum is 25.

Adding to 1100220051553 its reverse (3551500220011), we get a palindrome (4651720271564).

The spelling of 1100220051553 in words is "one trillion, one hundred billion, two hundred twenty million, fifty-one thousand, five hundred fifty-three".