22122121212210 has 64 divisors (see below), whose sum is σ = 53734004456832. Its totient is φ = 5828022982656.

The previous prime is 22122121212203. The next prime is 22122121212223. The reversal of 22122121212210 is 1221212122122.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 155546452 + ... + 155688608.

It is an arithmetic number, because the mean of its divisors is an integer number (839593819638).

Almost surely, 2^{22122121212210} is an apocalyptic number.

22122121212210 is an abundant number, since it is smaller than the sum of its proper divisors (31611883244622).

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

22122121212210 is a wasteful number, since it uses less digits than its factorization.

22122121212210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 204747.

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

Adding to 22122121212210 its reverse (1221212122122), we get a palindrome (23343333334332).

It can be divided in two parts, 2 and 2122121212210, that added together give a palindrome (2122121212212).

The spelling of 22122121212210 in words is "twenty-two trillion, one hundred twenty-two billion, one hundred twenty-one million, two hundred twelve thousand, two hundred ten".