1220231133 has 12 divisors (see below), whose sum is σ = 1922788608. Its totient is φ = 739533960.

The previous prime is 1220231119. The next prime is 1220231141. The reversal of 1220231133 is 3311320221.

It is not a de Polignac number, because 1220231133 - 2⁶ = 1220231069 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1220231153) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6162685 + ... + 6162882.

It is an arithmetic number, because the mean of its divisors is an integer number (160232384).

Almost surely, 2^1220231133 is an apocalyptic number.

It is an amenable number.

1220231133 is a deficient number, since it is larger than the sum of its proper divisors (702557475).

1220231133 is a wasteful number, since it uses less digits than its factorization.

1220231133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12325584 (or 12325581 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

The square root of 1220231133 is about 34931.8068957218. The cubic root of 1220231133 is about 1068.5972047082.

Adding to 1220231133 its reverse (3311320221), we get a palindrome (4531551354).

The spelling of 1220231133 in words is "one billion, two hundred twenty million, two hundred thirty-one thousand, one hundred thirty-three".