1220211233 has 8 divisors (see below), whose sum is σ = 1233705408. Its totient is φ = 1206748944.

The previous prime is 1220211229. The next prime is 1220211241. The reversal of 1220211233 is 3321120221.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1220211233 - 2² = 1220211229 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1220211253) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 73535 + ... + 88587.

It is an arithmetic number, because the mean of its divisors is an integer number (154213176).

Almost surely, 2^1220211233 is an apocalyptic number.

It is an amenable number.

1220211233 is a deficient number, since it is larger than the sum of its proper divisors (13494175).

1220211233 is a wasteful number, since it uses less digits than its factorization.

1220211233 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15943.

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 1220211233 is about 34931.5220538699. The cubic root of 1220211233 is about 1068.5913956448.

Adding to 1220211233 its reverse (3321120221), we get a palindrome (4541331454).

The spelling of 1220211233 in words is "one billion, two hundred twenty million, two hundred eleven thousand, two hundred thirty-three".