212101121210 has 32 divisors (see below), whose sum is σ = 418232160000. Its totient is φ = 76804960960.

The previous prime is 212101121189. The next prime is 212101121227. The reversal of 212101121210 is 12121101212.

It is a super-2 number, since 2×212101121210² (a number of 23 digits) contains 22 as substring.

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, 4007585 + ... + 4060164.

It is an arithmetic number, because the mean of its divisors is an integer number (13069755000).

Almost surely, 2^212101121210 is an apocalyptic number.

212101121210 is a deficient number, since it is larger than the sum of its proper divisors (206131038790).

212101121210 is a wasteful number, since it uses less digits than its factorization.

212101121210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8068006.

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

Adding to 212101121210 its reverse (12121101212), we get a palindrome (224222222422).

The spelling of 212101121210 in words is "two hundred twelve billion, one hundred one million, one hundred twenty-one thousand, two hundred ten".