212021321101 has 8 divisors (see below), whose sum is σ = 216015425784. Its totient is φ = 208064371200.

The previous prime is 212021321093. The next prime is 212021321111. The reversal of 212021321101 is 101123120212.

It can be written as a sum of positive squares in 4 ways, for example, as 94595076 + 211926726025 = 9726^2 + 460355^2 .

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 212021321101 - 2³ = 212021321093 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 (212021321111) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9277176 + ... + 9300001.

It is an arithmetic number, because the mean of its divisors is an integer number (27001928223).

Almost surely, 2^212021321101 is an apocalyptic number.

It is an amenable number.

212021321101 is a deficient number, since it is larger than the sum of its proper divisors (3994104683).

212021321101 is a wasteful number, since it uses less digits than its factorization.

212021321101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18577391.

The product of its (nonzero) digits is 48, while the sum is 16.

Adding to 212021321101 its reverse (101123120212), we get a palindrome (313144441313).

The spelling of 212021321101 in words is "two hundred twelve billion, twenty-one million, three hundred twenty-one thousand, one hundred one".