1211322230 has 16 divisors (see below), whose sum is σ = 2201550624. Its totient is φ = 479824320.

The previous prime is 1211322197. The next prime is 1211322239. The reversal of 1211322230 is 322231121.

It is a junction number, because it is equal to n+sod(n) for n = 1211322199 and 1211322208.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1211322239) 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, 586991 + ... + 589050.

It is an arithmetic number, because the mean of its divisors is an integer number (137596914).

Almost surely, 2^1211322230 is an apocalyptic number.

1211322230 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1211322230 is a deficient number, since it is larger than the sum of its proper divisors (990228394).

1211322230 is a wasteful number, since it uses less digits than its factorization.

1211322230 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1176151.

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

The square root of 1211322230 is about 34804.0547925094. The cubic root of 1211322230 is about 1065.9902418184.

Adding to 1211322230 its reverse (322231121), we get a palindrome (1533553351).

It can be divided in two parts, 12113 and 22230, that added together give a palindrome (34343).

The spelling of 1211322230 in words is "one billion, two hundred eleven million, three hundred twenty-two thousand, two hundred thirty".