1220201212 has 6 divisors (see below), whose sum is σ = 2135352128. Its totient is φ = 610100604.

The previous prime is 1220201189. The next prime is 1220201249. The reversal of 1220201212 is 2121020221.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 1220201192 and 1220201201.

It is a congruent number.

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 as a sum of consecutive naturals, namely, 152525148 + ... + 152525155.

Almost surely, 2^1220201212 is an apocalyptic number.

It is an amenable number.

1220201212 is a deficient number, since it is larger than the sum of its proper divisors (915150916).

1220201212 is a wasteful number, since it uses less digits than its factorization.

1220201212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 305050307 (or 305050305 counting only the distinct ones).

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

The square root of 1220201212 is about 34931.3786157947. The cubic root of 1220201212 is about 1068.5884703634.

Adding to 1220201212 its reverse (2121020221), we get a palindrome (3341221433).

The spelling of 1220201212 in words is "one billion, two hundred twenty million, two hundred one thousand, two hundred twelve".