1200006111 has 8 divisors (see below), whose sum is σ = 1600560000. Its totient is φ = 799728152.

The previous prime is 1200006103. The next prime is 1200006221. The reversal of 1200006111 is 1116000021.

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 1200006111 - 2³ = 1200006103 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1200006611) 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, 58611 + ... + 76388.

It is an arithmetic number, because the mean of its divisors is an integer number (200070000).

Almost surely, 2^1200006111 is an apocalyptic number.

1200006111 is a deficient number, since it is larger than the sum of its proper divisors (400553889).

1200006111 is a wasteful number, since it uses less digits than its factorization.

1200006111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 137965.

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

The square root of 1200006111 is about 34641.1043559526. The cubic root of 1200006111 is about 1062.6603730425.

Adding to 1200006111 its reverse (1116000021), we get a palindrome (2316006132).

The spelling of 1200006111 in words is "one billion, two hundred million, six thousand, one hundred eleven".