1022212202220 has 144 divisors (see below), whose sum is σ = 3383370611712. Its totient is φ = 247752059520.

The previous prime is 1022212202213. The next prime is 1022212202287. The reversal of 1022212202220 is 222022122201.

1022212202220 is a `hidden beast` number, since 1 + 0 + 2 + 221 + 220 + 2 + 220 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 1022212202193 and 1022212202202.

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 in 47 ways as a sum of consecutive naturals, for example, 8898469 + ... + 9012611.

It is an arithmetic number, because the mean of its divisors is an integer number (23495629248).

Almost surely, 2^{1022212202220} is an apocalyptic number.

1022212202220 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 1022212202220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1691685305856).

1022212202220 is an abundant number, since it is smaller than the sum of its proper divisors (2361158409492).

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

1022212202220 is a wasteful number, since it uses less digits than its factorization.

1022212202220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 118692 (or 118687 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 18.

Adding to 1022212202220 its reverse (222022122201), we get a palindrome (1244234324421).

The spelling of 1022212202220 in words is "one trillion, twenty-two billion, two hundred twelve million, two hundred two thousand, two hundred twenty".