1201012011 has 12 divisors (see below), whose sum is σ = 1743880320. Its totient is φ = 796481520.

The previous prime is 1201011991. The next prime is 1201012027. The reversal of 1201012011 is 1102101021.

It is a happy number.

It is not a de Polignac number, because 1201012011 - 2⁶ = 1201011947 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 = 1201011984 and 1201012002.

It is not an unprimeable number, because it can be changed into a prime (1201012081) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 347616 + ... + 351053.

It is an arithmetic number, because the mean of its divisors is an integer number (145323360).

Almost surely, 2^1201012011 is an apocalyptic number.

1201012011 is a deficient number, since it is larger than the sum of its proper divisors (542868309).

1201012011 is a wasteful number, since it uses less digits than its factorization.

1201012011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 698866 (or 698863 counting only the distinct ones).

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

The square root of 1201012011 is about 34655.6201935559. The cubic root of 1201012011 is about 1062.9572136233.

Adding to 1201012011 its reverse (1102101021), we get a palindrome (2303113032).

The spelling of 1201012011 in words is "one billion, two hundred one million, twelve thousand, eleven".