1200011122211 has 12 divisors (see below), whose sum is σ = 1343907675936. Its totient is φ = 1070335815120.

The previous prime is 1200011122183. The next prime is 1200011122213. The reversal of 1200011122211 is 1122211100021.

It is not a de Polignac number, because 1200011122211 - 2¹⁰ = 1200011121187 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1200011122213) 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, 93554411 + ... + 93567236.

It is an arithmetic number, because the mean of its divisors is an integer number (111992306328).

Almost surely, 2^{1200011122211} is an apocalyptic number.

1200011122211 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1200011122211 is a deficient number, since it is larger than the sum of its proper divisors (143896553725).

1200011122211 is a wasteful number, since it uses less digits than its factorization.

1200011122211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 187121722 (or 187121711 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 1200011122211 its reverse (1122211100021), we get a palindrome (2322222222232).

The spelling of 1200011122211 in words is "one trillion, two hundred billion, eleven million, one hundred twenty-two thousand, two hundred eleven".