1200011011002 has 48 divisors (see below), whose sum is σ = 2705582674080. Its totient is φ = 384079189536.

The previous prime is 1200011010977. The next prime is 1200011011027. The reversal of 1200011011002 is 2001101100021.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (1200011010977) and next prime (1200011011027).

It is a Harshad number since it is a multiple of its sum of digits (9).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 13093333 + ... + 13184664.

It is an arithmetic number, because the mean of its divisors is an integer number (56366305710).

Almost surely, 2^{1200011011002} is an apocalyptic number.

1200011011002 is an abundant number, since it is smaller than the sum of its proper divisors (1505571663078).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1200011011002 is a wasteful number, since it uses less digits than its factorization.

1200011011002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26278107 (or 26278104 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 9.

Adding to 1200011011002 its reverse (2001101100021), we get a palindrome (3201112111023).

The spelling of 1200011011002 in words is "one trillion, two hundred billion, eleven million, eleven thousand, two".