11111121230 has 16 divisors (see below), whose sum is σ = 21818201904. Its totient is φ = 4040407680.

The previous prime is 11111121211. The next prime is 11111121247. The reversal of 11111121230 is 3212111111.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 50504987 + ... + 50505206.

It is an arithmetic number, because the mean of its divisors is an integer number (1363637619).

Almost surely, 2^11111121230 is an apocalyptic number.

11111121230 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

11111121230 is a deficient number, since it is larger than the sum of its proper divisors (10707080674).

11111121230 is a wasteful number, since it uses less digits than its factorization.

11111121230 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 101010211.

The product of its (nonzero) digits is 12, while the sum is 14.

Adding to 11111121230 its reverse (3212111111), we get a palindrome (14323232341).

The spelling of 11111121230 in words is "eleven billion, one hundred eleven million, one hundred twenty-one thousand, two hundred thirty".