212220101220101 has 16 divisors (see below), whose sum is σ = 230648465013120. Its totient is φ = 194092380895680.

The previous prime is 212220101220073. The next prime is 212220101220133. The reversal of 212220101220101 is 101022101022212.

212220101220101 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-212220101220101 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 212220101220101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212220101220301) 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, 44775506 + ... + 49287788.

It is an arithmetic number, because the mean of its divisors is an integer number (14415529063320).

Almost surely, 2^{212220101220101} is an apocalyptic number.

It is an amenable number.

212220101220101 is a deficient number, since it is larger than the sum of its proper divisors (18428363793019).

212220101220101 is a wasteful number, since it uses less digits than its factorization.

212220101220101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4545596.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 212220101220101 its reverse (101022101022212), we get a palindrome (313242202242313).

The spelling of 212220101220101 in words is "two hundred twelve trillion, two hundred twenty billion, one hundred one million, two hundred twenty thousand, one hundred one".