1220021022222 has 32 divisors (see below), whose sum is σ = 2711262598560. Its totient is φ = 406657958400.

The previous prime is 1220021022203. The next prime is 1220021022223. The reversal of 1220021022222 is 2222201200221.

1220021022222 is a `hidden beast` number, since 12 + 200 + 210 + 22 + 222 = 666.

It is a super-2 number, since 2×1220021022222² (a number of 25 digits) contains 22 as substring.

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 = 1220021022195 and 1220021022204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1220021022223) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1018222 + ... + 1864622.

It is an arithmetic number, because the mean of its divisors is an integer number (84726956205).

Almost surely, 2^{1220021022222} is an apocalyptic number.

1220021022222 is an abundant number, since it is smaller than the sum of its proper divisors (1491241576338).

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

1220021022222 is a wasteful number, since it uses less digits than its factorization.

1220021022222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 873105 (or 873099 counting only the distinct ones).

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

Adding to 1220021022222 its reverse (2222201200221), we get a palindrome (3442222222443).

The spelling of 1220021022222 in words is "one trillion, two hundred twenty billion, twenty-one million, twenty-two thousand, two hundred twenty-two".