212010101021 has 8 divisors (see below), whose sum is σ = 225825485760. Its totient is φ = 198344072128.

The previous prime is 212010100999. The next prime is 212010101057. The reversal of 212010101021 is 120101010212.

212010101021 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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-212010101021 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 212010100993 and 212010101011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212010101071) 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, 37336031 + ... + 37341708.

It is an arithmetic number, because the mean of its divisors is an integer number (28228185720).

Almost surely, 2^212010101021 is an apocalyptic number.

It is an amenable number.

212010101021 is a deficient number, since it is larger than the sum of its proper divisors (13815384739).

212010101021 is a wasteful number, since it uses less digits than its factorization.

212010101021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74677923.

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

Adding to 212010101021 its reverse (120101010212), we get a palindrome (332111111233).

It can be divided in two parts, 2 and 12010101021, that multiplied together give a palindrome (24020202042).

The spelling of 212010101021 in words is "two hundred twelve billion, ten million, one hundred one thousand, twenty-one".