22220221020212 has 6 divisors (see below), whose sum is σ = 38885386785378. Its totient is φ = 11110110510104.

The previous prime is 22220221020203. The next prime is 22220221020247. The reversal of 22220221020212 is 21202012202222.

It can be written as a sum of positive squares in only one way, i.e., 21037229796496 + 1182991223716 = 4586636^2 + 1087654^2 .

It is a super-2 number, since 2×22220221020212² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2777527627523 + ... + 2777527627530.

It is an arithmetic number, because the mean of its divisors is an integer number (6480897797563).

Almost surely, 2^{22220221020212} is an apocalyptic number.

It is an amenable number.

22220221020212 is a deficient number, since it is larger than the sum of its proper divisors (16665165765166).

22220221020212 is a wasteful number, since it uses less digits than its factorization.

22220221020212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5555055255057 (or 5555055255055 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 20.

Adding to 22220221020212 its reverse (21202012202222), we get a palindrome (43422233222434).

The spelling of 22220221020212 in words is "twenty-two trillion, two hundred twenty billion, two hundred twenty-one million, twenty thousand, two hundred twelve".