212211121210 has 128 divisors (see below), whose sum is σ = 448146743040. Its totient is φ = 71496192000.

The previous prime is 212211121153. The next prime is 212211121211. The reversal of 212211121210 is 12121112212.

It is not an unprimeable number, because it can be changed into a prime (212211121211) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 33804592 + ... + 33810868.

It is an arithmetic number, because the mean of its divisors is an integer number (3501146430).

Almost surely, 2^212211121210 is an apocalyptic number.

212211121210 is an abundant number, since it is smaller than the sum of its proper divisors (235935621830).

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

212211121210 is a wasteful number, since it uses less digits than its factorization.

212211121210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6592.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 212211121210 its reverse (12121112212), we get a palindrome (224332233422).

The spelling of 212211121210 in words is "two hundred twelve billion, two hundred eleven million, one hundred twenty-one thousand, two hundred ten".