1200211011111 has 8 divisors (see below), whose sum is σ = 1828892969344. Its totient is φ = 685834863480.

The previous prime is 1200211011067. The next prime is 1200211011137. The reversal of 1200211011111 is 1111101120021.

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

It is not a de Polignac number, because 1200211011111 - 2⁶ = 1200211011047 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1200211011151) 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, 28576452625 + ... + 28576452666.

It is an arithmetic number, because the mean of its divisors is an integer number (228611621168).

Almost surely, 2^{1200211011111} is an apocalyptic number.

1200211011111 is a deficient number, since it is larger than the sum of its proper divisors (628681958233).

1200211011111 is an equidigital number, since it uses as much as digits as its factorization.

1200211011111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57152905301.

The product of its (nonzero) digits is 4, while the sum is 12.

Adding to 1200211011111 its reverse (1111101120021), we get a palindrome (2311312131132).

The spelling of 1200211011111 in words is "one trillion, two hundred billion, two hundred eleven million, eleven thousand, one hundred eleven".