1201211022011 has 64 divisors (see below), whose sum is σ = 1731081010176. Its totient is φ = 802043596800.

The previous prime is 1201211021981. The next prime is 1201211022013. The reversal of 1201211022011 is 1102201121021.

It is a cyclic number.

It is not a de Polignac number, because 1201211022011 - 2⁶ = 1201211021947 is a prime.

It is a super-2 number, since 2×1201211022011² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1201211022013) 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 63 ways as a sum of consecutive naturals, for example, 758756 + ... + 1725726.

It is an arithmetic number, because the mean of its divisors is an integer number (27048140784).

Almost surely, 2^{1201211022011} is an apocalyptic number.

1201211022011 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1201211022011 is a deficient number, since it is larger than the sum of its proper divisors (529869988165).

1201211022011 is a wasteful number, since it uses less digits than its factorization.

1201211022011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 967092.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 1201211022011 its reverse (1102201121021), we get a palindrome (2303412143032).

The spelling of 1201211022011 in words is "one trillion, two hundred one billion, two hundred eleven million, twenty-two thousand, eleven".