11211221230 has 16 divisors (see below), whose sum is σ = 22014761904. Its totient is φ = 4076807680.

The previous prime is 11211221221. The next prime is 11211221233. The reversal of 11211221230 is 3212211211.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11211221233) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 50959987 + ... + 50960206.

It is an arithmetic number, because the mean of its divisors is an integer number (1375922619).

Almost surely, 2^11211221230 is an apocalyptic number.

11211221230 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

11211221230 is a deficient number, since it is larger than the sum of its proper divisors (10803540674).

11211221230 is a wasteful number, since it uses less digits than its factorization.

11211221230 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 101920211.

The product of its (nonzero) digits is 48, while the sum is 16.

Adding to 11211221230 its reverse (3212211211), we get a palindrome (14423432441).

The spelling of 11211221230 in words is "eleven billion, two hundred eleven million, two hundred twenty-one thousand, two hundred thirty".