1105870221 has 6 divisors (see below), whose sum is σ = 1597368110. Its totient is φ = 737246808.

The previous prime is 1105870187. The next prime is 1105870237. The reversal of 1105870221 is 1220785011.

1105870221 is digitally balanced in base 4, 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., 785961225 + 319908996 = 28035^2 + 17886^2 .

It is not a de Polignac number, because 1105870221 - 2¹⁷ = 1105739149 is a prime.

It is a super-6 number, since 6×1105870221⁶ (a number of 56 digits) contains 666666 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1105870921) 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, 61437226 + ... + 61437243.

Almost surely, 2^1105870221 is an apocalyptic number.

It is an amenable number.

1105870221 is a deficient number, since it is larger than the sum of its proper divisors (491497889).

1105870221 is a wasteful number, since it uses less digits than its factorization.

1105870221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 122874475 (or 122874472 counting only the distinct ones).

The product of its (nonzero) digits is 1120, while the sum is 27.

The square root of 1105870221 is about 33254.6270615083. The cubic root of 1105870221 is about 1034.1131351254.

The spelling of 1105870221 in words is "one billion, one hundred five million, eight hundred seventy thousand, two hundred twenty-one".