22120221102212 has 6 divisors (see below), whose sum is σ = 38710386928878. Its totient is φ = 11060110551104.

The previous prime is 22120221102211. The next prime is 22120221102227. The reversal of 22120221102212 is 21220112202122.

It can be written as a sum of positive squares in only one way, i.e., 11977371975556 + 10142849126656 = 3460834^2 + 3184784^2 .

It is a super-2 number, since 2×22120221102212² (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (22120221102211) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2765027637773 + ... + 2765027637780.

It is an arithmetic number, because the mean of its divisors is an integer number (6451731154813).

Almost surely, 2^{22120221102212} is an apocalyptic number.

It is an amenable number.

22120221102212 is a deficient number, since it is larger than the sum of its proper divisors (16590165826666).

22120221102212 is a wasteful number, since it uses less digits than its factorization.

22120221102212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5530055275557 (or 5530055275555 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 20.

Adding to 22120221102212 its reverse (21220112202122), we get a palindrome (43340333304334).

The spelling of 22120221102212 in words is "twenty-two trillion, one hundred twenty billion, two hundred twenty-one million, one hundred two thousand, two hundred twelve".