212121111200101 has 8 divisors (see below), whose sum is σ = 212911483223520. Its totient is φ = 211330752641712.

The previous prime is 212121111200069. The next prime is 212121111200113. The reversal of 212121111200101 is 101002111121212.

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

It is a cyclic number.

It is not a de Polignac number, because 212121111200101 - 2⁵ = 212121111200069 is a prime.

It is a super-2 number, since 2×212121111200101² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212121111207101) 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 7 ways as a sum of consecutive naturals, for example, 28769866 + ... + 35382868.

It is an arithmetic number, because the mean of its divisors is an integer number (26613935402940).

Almost surely, 2^{212121111200101} is an apocalyptic number.

It is an amenable number.

212121111200101 is a deficient number, since it is larger than the sum of its proper divisors (790372023419).

212121111200101 is a wasteful number, since it uses less digits than its factorization.

212121111200101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6732515.

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

Adding to 212121111200101 its reverse (101002111121212), we get a palindrome (313123222321313).

The spelling of 212121111200101 in words is "two hundred twelve trillion, one hundred twenty-one billion, one hundred eleven million, two hundred thousand, one hundred one".