1220212002222 has 24 divisors (see below), whose sum is σ = 2647721067264. Its totient is φ = 406132965504.

The previous prime is 1220212002199. The next prime is 1220212002223. The reversal of 1220212002222 is 2222002120221.

1220212002222 is a `hidden beast` number, since 1 + 220 + 21 + 200 + 2 + 222 = 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 = 1220212002195 and 1220212002204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1220212002223) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 50351598 + ... + 50375825.

It is an arithmetic number, because the mean of its divisors is an integer number (110321711136).

Almost surely, 2^{1220212002222} is an apocalyptic number.

1220212002222 is an abundant number, since it is smaller than the sum of its proper divisors (1427509065042).

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

1220212002222 is a wasteful number, since it uses less digits than its factorization.

1220212002222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100728104 (or 100728101 counting only the distinct ones).

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

Adding to 1220212002222 its reverse (2222002120221), we get a palindrome (3442214122443).

The spelling of 1220212002222 in words is "one trillion, two hundred twenty billion, two hundred twelve million, two thousand, two hundred twenty-two".