1211231203 has 8 divisors (see below), whose sum is σ = 1490746208. Its totient is φ = 958336704.

The previous prime is 1211231123. The next prime is 1211231213. The reversal of 1211231203 is 3021321121.

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

It is not a de Polignac number, because 1211231203 - 2¹⁷ = 1211100131 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1211231213) 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, 6655026 + ... + 6655207.

It is an arithmetic number, because the mean of its divisors is an integer number (186343276).

Almost surely, 2^1211231203 is an apocalyptic number.

1211231203 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

1211231203 is a deficient number, since it is larger than the sum of its proper divisors (279515005).

1211231203 is a wasteful number, since it uses less digits than its factorization.

1211231203 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13310253.

The product of its (nonzero) digits is 72, while the sum is 16.

The square root of 1211231203 is about 34802.7470611157. The cubic root of 1211231203 is about 1065.9635392279.

Adding to 1211231203 its reverse (3021321121), we get a palindrome (4232552324).

The spelling of 1211231203 in words is "one billion, two hundred eleven million, two hundred thirty-one thousand, two hundred three".