222102022120220 has 72 divisors (see below), whose sum is σ = 512795483011392. Its totient is φ = 80744635762560.

The previous prime is 222102022120207. The next prime is 222102022120243. The reversal of 222102022120220 is 22021220201222.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 222102022120192 and 222102022120201.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1306484 + ... + 21116603.

Almost surely, 2^{222102022120220} is an apocalyptic number.

222102022120220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 222102022120220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (256397741505696).

222102022120220 is an abundant number, since it is smaller than the sum of its proper divisors (290693460891172).

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

222102022120220 is a wasteful number, since it uses less digits than its factorization.

222102022120220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22427211 (or 22427198 counting only the distinct ones).

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

Adding to 222102022120220 its reverse (22021220201222), we get a palindrome (244123242321442).

The spelling of 222102022120220 in words is "two hundred twenty-two trillion, one hundred two billion, twenty-two million, one hundred twenty thousand, two hundred twenty".