1211203233 has 16 divisors (see below), whose sum is σ = 1899927360. Its totient is φ = 759970368.

The previous prime is 1211203229. The next prime is 1211203283. The reversal of 1211203233 is 3323021121.

It is not a de Polignac number, because 1211203233 - 2² = 1211203229 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1211203283) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1318935 + ... + 1319852.

It is an arithmetic number, because the mean of its divisors is an integer number (118745460).

Almost surely, 2^1211203233 is an apocalyptic number.

It is an amenable number.

1211203233 is a deficient number, since it is larger than the sum of its proper divisors (688724127).

1211203233 is a wasteful number, since it uses less digits than its factorization.

1211203233 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2638813 (or 2638807 counting only the distinct ones).

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

The square root of 1211203233 is about 34802.3452227002. The cubic root of 1211203233 is about 1065.9553340150.

Adding to 1211203233 its reverse (3323021121), we get a palindrome (4534224354).

The spelling of 1211203233 in words is "one billion, two hundred eleven million, two hundred three thousand, two hundred thirty-three".