212011020221 has 32 divisors (see below), whose sum is σ = 284739426048. Its totient is φ = 152451901440.

The previous prime is 212011020217. The next prime is 212011020227. The reversal of 212011020221 is 122020110212.

It is a cyclic number.

It is not a de Polignac number, because 212011020221 - 2² = 212011020217 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 212011020196 and 212011020205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212011020227) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3708365 + ... + 3765101.

It is an arithmetic number, because the mean of its divisors is an integer number (8898107064).

Almost surely, 2^212011020221 is an apocalyptic number.

It is an amenable number.

212011020221 is a deficient number, since it is larger than the sum of its proper divisors (72728405827).

212011020221 is a wasteful number, since it uses less digits than its factorization.

212011020221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60501.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 212011020221 its reverse (122020110212), we get a palindrome (334031130433).

The spelling of 212011020221 in words is "two hundred twelve billion, eleven million, twenty thousand, two hundred twenty-one".