212020110101 has 4 divisors (see below), whose sum is σ = 212185881600. Its totient is φ = 211854338604.

The previous prime is 212020110089. The next prime is 212020110109. The reversal of 212020110101 is 101011020212.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-212020110101 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 (212020110109) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 82883831 + ... + 82886388.

It is an arithmetic number, because the mean of its divisors is an integer number (53046470400).

Almost surely, 2^212020110101 is an apocalyptic number.

It is an amenable number.

212020110101 is a deficient number, since it is larger than the sum of its proper divisors (165771499).

212020110101 is a wasteful number, since it uses less digits than its factorization.

212020110101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 165771498.

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 212020110101 its reverse (101011020212), we get a palindrome (313031130313).

The spelling of 212020110101 in words is "two hundred twelve billion, twenty million, one hundred ten thousand, one hundred one".