201212212111101 has 16 divisors (see below), whose sum is σ = 298092456038400. Its totient is φ = 134141344264224.

The previous prime is 201212212111051. The next prime is 201212212111109. The reversal of 201212212111101 is 101111212212102.

It is a happy number.

201212212111101 is a `hidden beast` number, since 2 + 0 + 121 + 221 + 211 + 110 + 1 = 666.

It is not a de Polignac number, because 201212212111101 - 2²³ = 201212203722493 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201212212111109) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 30484425 + ... + 36492801.

It is an arithmetic number, because the mean of its divisors is an integer number (18630778502400).

Almost surely, 2^{201212212111101} is an apocalyptic number.

It is an amenable number.

201212212111101 is a deficient number, since it is larger than the sum of its proper divisors (96880243927299).

201212212111101 is a wasteful number, since it uses less digits than its factorization.

201212212111101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7248705 (or 7248699 counting only the distinct ones).

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

Adding to 201212212111101 its reverse (101111212212102), we get a palindrome (302323424323203).

The spelling of 201212212111101 in words is "two hundred one trillion, two hundred twelve billion, two hundred twelve million, one hundred eleven thousand, one hundred one".