1212211110011 has 32 divisors (see below), whose sum is σ = 1413050012928. Its totient is φ = 1027674224640.

The previous prime is 1212211110007. The next prime is 1212211110023. The reversal of 1212211110011 is 1100111122121.

It is a cyclic number.

It is not a de Polignac number, because 1212211110011 - 2² = 1212211110007 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1212211110001) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 82551476 + ... + 82566158.

It is an arithmetic number, because the mean of its divisors is an integer number (44157812904).

Almost surely, 2^{1212211110011} is an apocalyptic number.

1212211110011 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1212211110011 is a deficient number, since it is larger than the sum of its proper divisors (200838902917).

1212211110011 is a wasteful number, since it uses less digits than its factorization.

1212211110011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18731.

The product of its (nonzero) digits is 8, while the sum is 14.

Adding to 1212211110011 its reverse (1100111122121), we get a palindrome (2312322232132).

The spelling of 1212211110011 in words is "one trillion, two hundred twelve billion, two hundred eleven million, one hundred ten thousand, eleven".