1201210211011 has 16 divisors (see below), whose sum is σ = 1246829126400. Its totient is φ = 1155877783200.

The previous prime is 1201210210997. The next prime is 1201210211017. The reversal of 1201210211011 is 1101120121021.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 1201210211011 - 2³¹ = 1199062727363 is a prime.

It is a super-2 number, since 2×1201210211011² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1201210210982 and 1201210211000.

It is not an unprimeable number, because it can be changed into a prime (1201210211017) 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 15 ways as a sum of consecutive naturals, for example, 10191426 + ... + 10308616.

It is an arithmetic number, because the mean of its divisors is an integer number (77926820400).

Almost surely, 2^{1201210211011} is an apocalyptic number.

1201210211011 is a deficient number, since it is larger than the sum of its proper divisors (45618915389).

1201210211011 is a wasteful number, since it uses less digits than its factorization.

1201210211011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 118410.

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 1201210211011 its reverse (1101120121021), we get a palindrome (2302330332032).

The spelling of 1201210211011 in words is "one trillion, two hundred one billion, two hundred ten million, two hundred eleven thousand, eleven".