212011222211021 has 8 divisors (see below), whose sum is σ = 217983638076288. Its totient is φ = 206076968748000.

The previous prime is 212011222210981. The next prime is 212011222211029. The reversal of 212011222211021 is 120112222110212.

212011222211021 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 not a de Polignac number, because 212011222211021 - 2²⁶ = 212011155102157 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 212011222210984 and 212011222211002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212011222211029) 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, 9540589295 + ... + 9540611516.

It is an arithmetic number, because the mean of its divisors is an integer number (27247954759536).

Almost surely, 2^{212011222211021} is an apocalyptic number.

It is an amenable number.

212011222211021 is a deficient number, since it is larger than the sum of its proper divisors (5972415865267).

212011222211021 is a wasteful number, since it uses less digits than its factorization.

212011222211021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19081201123.

The product of its (nonzero) digits is 128, while the sum is 20.

Adding to 212011222211021 its reverse (120112222110212), we get a palindrome (332123444321233).

It can be divided in two parts, 2 and 12011222211021, that multiplied together give a palindrome (24022444422042).

The spelling of 212011222211021 in words is "two hundred twelve trillion, eleven billion, two hundred twenty-two million, two hundred eleven thousand, twenty-one".