22110212021212 has 24 divisors (see below), whose sum is σ = 45298970972640. Its totient is φ = 9244687952640.

The previous prime is 22110212021189. The next prime is 22110212021221. The reversal of 22110212021212 is 21212021201122.

It is a super-2 number, since 2×22110212021212² (a number of 27 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 22110212021212.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9629882137 + ... + 9629884432.

It is an arithmetic number, because the mean of its divisors is an integer number (1887457123860).

Almost surely, 2^{22110212021212} is an apocalyptic number.

It is an amenable number.

22110212021212 is an abundant number, since it is smaller than the sum of its proper divisors (23188758951428).

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

22110212021212 is a wasteful number, since it uses less digits than its factorization.

22110212021212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19259766621 (or 19259766619 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 22110212021212 its reverse (21212021201122), we get a palindrome (43322233222334).

The spelling of 22110212021212 in words is "twenty-two trillion, one hundred ten billion, two hundred twelve million, twenty-one thousand, two hundred twelve".