1200011102 has 4 divisors (see below), whose sum is σ = 1800016656. Its totient is φ = 600005550.

The previous prime is 1200011077. The next prime is 1200011123. The reversal of 1200011102 is 2011100021.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 2011100021 = 7 ⋅287300003.

It is a self number, because there is not a number n which added to its sum of digits gives 1200011102.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 300002774 + ... + 300002777.

It is an arithmetic number, because the mean of its divisors is an integer number (450004164).

Almost surely, 2^1200011102 is an apocalyptic number.

1200011102 is a deficient number, since it is larger than the sum of its proper divisors (600005554).

1200011102 is an equidigital number, since it uses as much as digits as its factorization.

1200011102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 600005553.

The product of its (nonzero) digits is 4, while the sum is 8.

The square root of 1200011102 is about 34641.1763945741. The cubic root of 1200011102 is about 1062.6618462935.

Adding to 1200011102 its reverse (2011100021), we get a palindrome (3211111123).

The spelling of 1200011102 in words is "one billion, two hundred million, eleven thousand, one hundred two".