1200102001011 has 12 divisors (see below), whose sum is σ = 1736176602888. Its totient is φ = 798823723104.

The previous prime is 1200102000961. The next prime is 1200102001013. The reversal of 1200102001011 is 1101002010021.

It is a happy number.

It is not a de Polignac number, because 1200102001011 - 2³¹ = 1197954517363 is a prime.

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

It is a junction number, because it is equal to n+sod(n) for n = 1200102000984 and 1200102001002.

It is not an unprimeable number, because it can be changed into a prime (1200102001013) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 103683690 + ... + 103695263.

It is an arithmetic number, because the mean of its divisors is an integer number (144681383574).

Almost surely, 2^{1200102001011} is an apocalyptic number.

1200102001011 is a deficient number, since it is larger than the sum of its proper divisors (536074601877).

1200102001011 is a wasteful number, since it uses less digits than its factorization.

1200102001011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 207379602 (or 207379599 counting only the distinct ones).

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

Adding to 1200102001011 its reverse (1101002010021), we get a palindrome (2301104011032).

The spelling of 1200102001011 in words is "one trillion, two hundred billion, one hundred two million, one thousand, eleven".