1201210120011 has 64 divisors (see below), whose sum is σ = 1858622008320. Its totient is φ = 682831818240.

The previous prime is 1201210120001. The next prime is 1201210120051. The reversal of 1201210120011 is 1100210121021.

It is not a de Polignac number, because 1201210120011 - 2⁶ = 1201210119947 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1201210120001) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 81613225 + ... + 81627941.

It is an arithmetic number, because the mean of its divisors is an integer number (29040968880).

Almost surely, 2^{1201210120011} is an apocalyptic number.

1201210120011 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1201210120011 is a deficient number, since it is larger than the sum of its proper divisors (657411888309).

1201210120011 is a wasteful number, since it uses less digits than its factorization.

1201210120011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16836.

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 1201210120011 its reverse (1100210121021), we get a palindrome (2301420241032).

The spelling of 1201210120011 in words is "one trillion, two hundred one billion, two hundred ten million, one hundred twenty thousand, eleven".