212020221210101 has 2 divisors, whose sum is σ = 212020221210102. Its totient is φ = 212020221210100.

The previous prime is 212020221210071. The next prime is 212020221210137. The reversal of 212020221210101 is 101012122020212.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 151718318125201 + 60301903084900 = 12317399^2 + 7765430^2 .

It is a cyclic number.

It is not a de Polignac number, because 212020221210101 - 2⁶ = 212020221210037 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 212020221210101.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (212020221510101) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106010110605050 + 106010110605051.

It is an arithmetic number, because the mean of its divisors is an integer number (106010110605051).

Almost surely, 2^{212020221210101} is an apocalyptic number.

It is an amenable number.

212020221210101 is a deficient number, since it is larger than the sum of its proper divisors (1).

212020221210101 is an equidigital number, since it uses as much as digits as its factorization.

212020221210101 is an odious number, because the sum of its binary digits is odd.

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

Adding to 212020221210101 its reverse (101012122020212), we get a palindrome (313032343230313).

The spelling of 212020221210101 in words is "two hundred twelve trillion, twenty billion, two hundred twenty-one million, two hundred ten thousand, one hundred one".