1220412212 has 6 divisors (see below), whose sum is σ = 2135721378. Its totient is φ = 610206104.

The previous prime is 1220412211. The next prime is 1220412217. The reversal of 1220412212 is 2122140221.

It can be written as a sum of positive squares in only one way, i.e., 1207979536 + 12432676 = 34756^2 + 3526^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1220412211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 152551523 + ... + 152551530.

It is an arithmetic number, because the mean of its divisors is an integer number (355953563).

Almost surely, 2^1220412212 is an apocalyptic number.

It is an amenable number.

1220412212 is a deficient number, since it is larger than the sum of its proper divisors (915309166).

1220412212 is a wasteful number, since it uses less digits than its factorization.

1220412212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 305103057 (or 305103055 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 17.

The square root of 1220412212 is about 34934.3986924063. The cubic root of 1220412212 is about 1068.6500610721.

Adding to 1220412212 its reverse (2122140221), we get a palindrome (3342552433).

The spelling of 1220412212 in words is "one billion, two hundred twenty million, four hundred twelve thousand, two hundred twelve".