212211101210 has 32 divisors (see below), whose sum is σ = 383810449680. Its totient is φ = 84478468608.

The previous prime is 212211101203. The next prime is 212211101261. The reversal of 212211101210 is 12101112212.

It can be written as a sum of positive squares in 8 ways, for example, as 150150825049 + 62060276161 = 387493^2 + 249119^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2098286 + ... + 2197094.

Almost surely, 2^212211101210 is an apocalyptic number.

212211101210 is a deficient number, since it is larger than the sum of its proper divisors (171599348470).

212211101210 is a wasteful number, since it uses less digits than its factorization.

212211101210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 99842.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 212211101210 its reverse (12101112212), we get a palindrome (224312213422).

The spelling of 212211101210 in words is "two hundred twelve billion, two hundred eleven million, one hundred one thousand, two hundred ten".