1222122000220 has 144 divisors (see below), whose sum is σ = 2969697245760. Its totient is φ = 421321922560.

The previous prime is 1222122000217. The next prime is 1222122000251. The reversal of 1222122000220 is 220002212221.

It is a junction number, because it is equal to n+sod(n) for n = 1222122000194 and 1222122000203.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 6192426 + ... + 6386734.

It is an arithmetic number, because the mean of its divisors is an integer number (20622897540).

Almost surely, 2^{1222122000220} is an apocalyptic number.

1222122000220 is a gapful number since it is divisible by the number (10) 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 1222122000220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1484848622880).

1222122000220 is an abundant number, since it is smaller than the sum of its proper divisors (1747575245540).

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

1222122000220 is a wasteful number, since it uses less digits than its factorization.

1222122000220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 194476 (or 194463 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 16.

Adding to 1222122000220 its reverse (220002212221), we get a palindrome (1442124212441).

The spelling of 1222122000220 in words is "one trillion, two hundred twenty-two billion, one hundred twenty-two million, two hundred twenty", and thus it is an aban number.