201021212212011 has 6 divisors (see below), whose sum is σ = 290363973195140. Its totient is φ = 134014141474668.

The previous prime is 201021212211961. The next prime is 201021212212019. The reversal of 201021212212011 is 110212212120102.

201021212212011 is a `hidden beast` number, since 20 + 10 + 212 + 1 + 221 + 201 + 1 = 666.

It is a de Polignac number, because none of the positive numbers 2^k-201021212212011 is a prime.

It is a super-2 number, since 2×201021212212011² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (201021212212019) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 11167845122881 + ... + 11167845122898.

Almost surely, 2^{201021212212011} is an apocalyptic number.

201021212212011 is a deficient number, since it is larger than the sum of its proper divisors (89342760983129).

201021212212011 is a wasteful number, since it uses less digits than its factorization.

201021212212011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22335690245785 (or 22335690245782 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

Adding to 201021212212011 its reverse (110212212120102), we get a palindrome (311233424332113).

The spelling of 201021212212011 in words is "two hundred one trillion, twenty-one billion, two hundred twelve million, two hundred twelve thousand, eleven".