1123212211011 has 12 divisors (see below), whose sum is σ = 1769910150840. Its totient is φ = 680734673280.

The previous prime is 1123212211007. The next prime is 1123212211057. The reversal of 1123212211011 is 1101122123211.

It is a happy number.

1123212211011 is a `hidden beast` number, since 112 + 321 + 221 + 1 + 0 + 11 = 666.

It is not a de Polignac number, because 1123212211011 - 2² = 1123212211007 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1123212211001) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5672788846 + ... + 5672789043.

It is an arithmetic number, because the mean of its divisors is an integer number (147492512570).

Almost surely, 2^{1123212211011} is an apocalyptic number.

1123212211011 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1123212211011 is a deficient number, since it is larger than the sum of its proper divisors (646697939829).

1123212211011 is a wasteful number, since it uses less digits than its factorization.

1123212211011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11345577906 (or 11345577903 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 18.

Adding to 1123212211011 its reverse (1101122123211), we get a palindrome (2224334334222).

The spelling of 1123212211011 in words is "one trillion, one hundred twenty-three billion, two hundred twelve million, two hundred eleven thousand, eleven".