212211221112101 has 8 divisors (see below), whose sum is σ = 224043082111680. Its totient is φ = 200445645048768.

The previous prime is 212211221112083. The next prime is 212211221112113. The reversal of 212211221112101 is 101211122112212.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-212211221112101 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212211221112151) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16571227481 + ... + 16571240286.

It is an arithmetic number, because the mean of its divisors is an integer number (28005385263960).

Almost surely, 2^{212211221112101} is an apocalyptic number.

It is an amenable number.

212211221112101 is a deficient number, since it is larger than the sum of its proper divisors (11831860999579).

212211221112101 is a wasteful number, since it uses less digits than its factorization.

212211221112101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33142468123.

The product of its (nonzero) digits is 64, while the sum is 20.

Adding to 212211221112101 its reverse (101211122112212), we get a palindrome (313422343224313).

The spelling of 212211221112101 in words is "two hundred twelve trillion, two hundred eleven billion, two hundred twenty-one million, one hundred twelve thousand, one hundred one".