212021021220211 has 12 divisors (see below), whose sum is σ = 250317842906568. Its totient is φ = 179019881453952.

The previous prime is 212021021220187. The next prime is 212021021220301. The reversal of 212021021220211 is 112022120120212.

It is not a de Polignac number, because 212021021220211 - 2¹³ = 212021021212019 is a prime.

It is a super-2 number, since 2×212021021220211² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (212021021223211) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 32290740126 + ... + 32290746691.

It is an arithmetic number, because the mean of its divisors is an integer number (20859820242214).

Almost surely, 2^{212021021220211} is an apocalyptic number.

212021021220211 is a deficient number, since it is larger than the sum of its proper divisors (38296821686357).

212021021220211 is an equidigital number, since it uses as much as digits as its factorization.

212021021220211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64581486898 (or 64581486891 counting only the distinct ones).

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

Adding to 212021021220211 its reverse (112022120120212), we get a palindrome (324043141340423).

The spelling of 212021021220211 in words is "two hundred twelve trillion, twenty-one billion, twenty-one million, two hundred twenty thousand, two hundred eleven".