210211121220212 has 24 divisors (see below), whose sum is σ = 422852428822656. Its totient is φ = 89569726298208.

The previous prime is 210211121220211. The next prime is 210211121220253. The reversal of 210211121220212 is 212022121112012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (210211121220211) 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, 21698087768 + ... + 21698097455.

It is an arithmetic number, because the mean of its divisors is an integer number (17618851200944).

Almost surely, 2^{210211121220212} is an apocalyptic number.

It is an amenable number.

210211121220212 is an abundant number, since it is smaller than the sum of its proper divisors (212641307602444).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

210211121220212 is a wasteful number, since it uses less digits than its factorization.

210211121220212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43396185407 (or 43396185405 counting only the distinct ones).

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

Adding to 210211121220212 its reverse (212022121112012), we get a palindrome (422233242332224).

The spelling of 210211121220212 in words is "two hundred ten trillion, two hundred eleven billion, one hundred twenty-one million, two hundred twenty thousand, two hundred twelve".