20022220221222 has 16 divisors (see below), whose sum is σ = 40103590288752. Its totient is φ = 6664215099360.

The previous prime is 20022220221221. The next prime is 20022220221247. The reversal of 20022220221222 is 22212202222002.

It is a super-2 number, since 2×20022220221222² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20022220221221) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2464572529 + ... + 2464580652.

It is an arithmetic number, because the mean of its divisors is an integer number (2506474393047).

Almost surely, 2^{20022220221222} is an apocalyptic number.

20022220221222 is an abundant number, since it is smaller than the sum of its proper divisors (20081370067530).

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

20022220221222 is a wasteful number, since it uses less digits than its factorization.

20022220221222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4929153863.

The product of its (nonzero) digits is 1024, while the sum is 21.

Adding to 20022220221222 its reverse (22212202222002), we get a palindrome (42234422443224).

The spelling of 20022220221222 in words is "twenty trillion, twenty-two billion, two hundred twenty million, two hundred twenty-one thousand, two hundred twenty-two".