212121020222011 has 8 divisors (see below), whose sum is σ = 229377423620160. Its totient is φ = 195395583082368.

The previous prime is 212121020222003. The next prime is 212121020222021. The reversal of 212121020222011 is 110222020121212.

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 212121020222011 - 2³ = 212121020222003 is a prime.

It is a super-3 number, since 3×212121020222011³ (a number of 44 digits) contains 333 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 212121020222011.

It is not an unprimeable number, because it can be changed into a prime (212121020222021) 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, 132741563796 + ... + 132741565393.

It is an arithmetic number, because the mean of its divisors is an integer number (28672177952520).

Almost surely, 2^{212121020222011} is an apocalyptic number.

212121020222011 is a deficient number, since it is larger than the sum of its proper divisors (17256403398149).

212121020222011 is a wasteful number, since it uses less digits than its factorization.

212121020222011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 265483129253.

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 212121020222011 its reverse (110222020121212), we get a palindrome (322343040343223).

The spelling of 212121020222011 in words is "two hundred twelve trillion, one hundred twenty-one billion, twenty million, two hundred twenty-two thousand, eleven".