1212200111011 has 8 divisors (see below), whose sum is σ = 1291380272784. Its totient is φ = 1133894868480.

The previous prime is 1212200111009. The next prime is 1212200111021. The reversal of 1212200111011 is 1101110022121.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1212200111011 - 2¹ = 1212200111009 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1212200110982 and 1212200111000.

It is not an unprimeable number, because it can be changed into a prime (1212200111021) 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, 218726950 + ... + 218732491.

It is an arithmetic number, because the mean of its divisors is an integer number (161422534098).

Almost surely, 2^{1212200111011} is an apocalyptic number.

1212200111011 is a deficient number, since it is larger than the sum of its proper divisors (79180161773).

1212200111011 is a wasteful number, since it uses less digits than its factorization.

1212200111011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 437459621.

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 1212200111011 its reverse (1101110022121), we get a palindrome (2313310133132).

The spelling of 1212200111011 in words is "one trillion, two hundred twelve billion, two hundred million, one hundred eleven thousand, eleven".