212211022121211 has 8 divisors (see below), whose sum is σ = 290595273535504. Its totient is φ = 137650392727200.

The previous prime is 212211022121191. The next prime is 212211022121239. The reversal of 212211022121211 is 112121220112212.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 212211022121211 - 2¹¹ = 212211022119163 is a prime.

It is a super-2 number, since 2×212211022121211² (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 (212211022121011) 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, 955905504940 + ... + 955905505161.

It is an arithmetic number, because the mean of its divisors is an integer number (36324409191938).

Almost surely, 2^{212211022121211} is an apocalyptic number.

212211022121211 is a deficient number, since it is larger than the sum of its proper divisors (78384251414293).

212211022121211 is a wasteful number, since it uses less digits than its factorization.

212211022121211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1911811010141.

The product of its (nonzero) digits is 128, while the sum is 21.

Adding to 212211022121211 its reverse (112121220112212), we get a palindrome (324332242233423).

The spelling of 212211022121211 in words is "two hundred twelve trillion, two hundred eleven billion, twenty-two million, one hundred twenty-one thousand, two hundred eleven".