1220212200222 has 24 divisors (see below), whose sum is σ = 2643907918080. Its totient is φ = 406719735840.

The previous prime is 1220212200191. The next prime is 1220212200227. The reversal of 1220212200222 is 2220022120221.

1220212200222 is a `hidden beast` number, since 1 + 220 + 2 + 1 + 220 + 0 + 222 = 666.

It is a super-2 number, since 2×1220212200222² (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 = 1220212200195 and 1220212200204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1220212200227) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1042654 + ... + 1878177.

It is an arithmetic number, because the mean of its divisors is an integer number (110162829920).

Almost surely, 2^{1220212200222} is an apocalyptic number.

1220212200222 is an abundant number, since it is smaller than the sum of its proper divisors (1423695717858).

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

1220212200222 is a wasteful number, since it uses less digits than its factorization.

1220212200222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2944048 (or 2944045 counting only the distinct ones).

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

Adding to 1220212200222 its reverse (2220022120221), we get a palindrome (3440234320443).

The spelling of 1220212200222 in words is "one trillion, two hundred twenty billion, two hundred twelve million, two hundred thousand, two hundred twenty-two".