1220212003122 has 72 divisors (see below), whose sum is σ = 3075602626512. Its totient is φ = 348612692400.

The previous prime is 1220212003093. The next prime is 1220212003141. The reversal of 1220212003122 is 2213002120221.

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 = 1220212003095 and 1220212003104.

It is an unprimeable number.

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 35 ways as a sum of consecutive naturals, for example, 25669797 + ... + 25717287.

It is an arithmetic number, because the mean of its divisors is an integer number (42716703146).

Almost surely, 2^{1220212003122} is an apocalyptic number.

1220212003122 is an abundant number, since it is smaller than the sum of its proper divisors (1855390623390).

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

1220212003122 is a wasteful number, since it uses less digits than its factorization.

1220212003122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76644 (or 76634 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

Adding to 1220212003122 its reverse (2213002120221), we get a palindrome (3433214123343).

The spelling of 1220212003122 in words is "one trillion, two hundred twenty billion, two hundred twelve million, three thousand, one hundred twenty-two".