201011212121211 has 20 divisors (see below), whose sum is σ = 300276484212144. Its totient is φ = 134007262326000.

The previous prime is 201011212121191. The next prime is 201011212121257. The reversal of 201011212121211 is 112121212110102.

It is a happy number.

201011212121211 is a `hidden beast` number, since 20 + 101 + 1 + 212 + 121 + 211 = 666.

It is not a de Polignac number, because 201011212121211 - 2⁶ = 201011212121147 is a prime.

It is a super-2 number, since 2×201011212121211² (a number of 29 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (201011212121261) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 62351386 + ... + 65495936.

Almost surely, 2^{201011212121211} is an apocalyptic number.

201011212121211 is a deficient number, since it is larger than the sum of its proper divisors (99265272090933).

201011212121211 is an equidigital number, since it uses as much as digits as its factorization.

201011212121211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3933744 (or 3933735 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 18.

Adding to 201011212121211 its reverse (112121212110102), we get a palindrome (313132424231313).

The spelling of 201011212121211 in words is "two hundred one trillion, eleven billion, two hundred twelve million, one hundred twenty-one thousand, two hundred eleven".