22121212212102 has 8 divisors (see below), whose sum is σ = 44242424424216. Its totient is φ = 7373737404032.

The previous prime is 22121212212101. The next prime is 22121212212157. The reversal of 22121212212102 is 20121221212122.

It is a sphenic number, since it is the product of 3 distinct primes.

22121212212102 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22121212212101) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1843434351003 + ... + 1843434351014.

It is an arithmetic number, because the mean of its divisors is an integer number (5530303053027).

Almost surely, 2^{22121212212102} is an apocalyptic number.

22121212212102 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

22121212212102 is a wasteful number, since it uses less digits than its factorization.

22121212212102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3686868702022.

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

Adding to 22121212212102 its reverse (20121221212122), we get a palindrome (42242433424224).

The spelling of 22121212212102 in words is "twenty-two trillion, one hundred twenty-one billion, two hundred twelve million, two hundred twelve thousand, one hundred two".