1220100200212 has 6 divisors (see below), whose sum is σ = 2135175350378. Its totient is φ = 610050100104.

The previous prime is 1220100200201. The next prime is 1220100200227. The reversal of 1220100200212 is 2120020010221.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 1117236316036 + 102863884176 = 1056994^2 + 320724^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1220100200192 and 1220100200201.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 152512525023 + ... + 152512525030.

Almost surely, 2^{1220100200212} is an apocalyptic number.

It is an amenable number.

1220100200212 is a deficient number, since it is larger than the sum of its proper divisors (915075150166).

1220100200212 is a wasteful number, since it uses less digits than its factorization.

1220100200212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 305025050057 (or 305025050055 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 1220100200212 its reverse (2120020010221), we get a palindrome (3340120210433).

The spelling of 1220100200212 in words is "one trillion, two hundred twenty billion, one hundred million, two hundred thousand, two hundred twelve".