212112222012210 has 128 divisors (see below), whose sum is σ = 605715389959680. Its totient is φ = 47004368818176.

The previous prime is 212112222012151. The next prime is 212112222012217. The reversal of 212112222012210 is 12210222211212.

It is a super-2 number, since 2×212112222012210² (a number of 29 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (212112222012217) 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, 695343025 + ... + 695648004.

It is an arithmetic number, because the mean of its divisors is an integer number (4732151484060).

Almost surely, 2^{212112222012210} is an apocalyptic number.

212112222012210 is an abundant number, since it is smaller than the sum of its proper divisors (393603167947470).

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

212112222012210 is a wasteful number, since it uses less digits than its factorization.

212112222012210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1390991092.

The product of its (nonzero) digits is 256, while the sum is 21.

Adding to 212112222012210 its reverse (12210222211212), we get a palindrome (224322444223422).

The spelling of 212112222012210 in words is "two hundred twelve trillion, one hundred twelve billion, two hundred twenty-two million, twelve thousand, two hundred ten".