1113250221 has 6 divisors (see below), whose sum is σ = 1608028110. Its totient is φ = 742166808.

The previous prime is 1113250217. The next prime is 1113250249. The reversal of 1113250221 is 1220523111.

1113250221 is a `hidden beast` number, since 11 + 132 + 502 + 21 = 666.

It can be written as a sum of positive squares in only one way, i.e., 893172996 + 220077225 = 29886^2 + 14835^2 .

It is not a de Polignac number, because 1113250221 - 2² = 1113250217 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1113250194 and 1113250203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1113250211) 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, 61847226 + ... + 61847243.

It is an arithmetic number, because the mean of its divisors is an integer number (268004685).

Almost surely, 2^1113250221 is an apocalyptic number.

It is an amenable number.

1113250221 is a deficient number, since it is larger than the sum of its proper divisors (494777889).

1113250221 is a wasteful number, since it uses less digits than its factorization.

1113250221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 123694475 (or 123694472 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 18.

The square root of 1113250221 is about 33365.4045532195. The cubic root of 1113250221 is about 1036.4084137436.

Adding to 1113250221 its reverse (1220523111), we get a palindrome (2333773332).

The spelling of 1113250221 in words is "one billion, one hundred thirteen million, two hundred fifty thousand, two hundred twenty-one".