22120010021212 has 24 divisors (see below), whose sum is σ = 40749285911040. Its totient is φ = 10477411161840.

The previous prime is 22120010021201. The next prime is 22120010021237. The reversal of 22120010021212 is 21212001002122.

It is a happy number.

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, 5138188 + ... + 8404819.

It is an arithmetic number, because the mean of its divisors is an integer number (1697886912960).

Almost surely, 2^{22120010021212} is an apocalyptic number.

It is an amenable number.

22120010021212 is a deficient number, since it is larger than the sum of its proper divisors (18629275889828).

22120010021212 is a wasteful number, since it uses less digits than its factorization.

22120010021212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13564521 (or 13564519 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 22120010021212 its reverse (21212001002122), we get a palindrome (43332011023334).

The spelling of 22120010021212 in words is "twenty-two trillion, one hundred twenty billion, ten million, twenty-one thousand, two hundred twelve".