1220202212 has 6 divisors (see below), whose sum is σ = 2135353878. Its totient is φ = 610101104.

The previous prime is 1220202209. The next prime is 1220202259. The reversal of 1220202212 is 2122020221.

It can be written as a sum of positive squares in only one way, i.e., 643433956 + 576768256 = 25366^2 + 24016^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 152525273 + ... + 152525280.

It is an arithmetic number, because the mean of its divisors is an integer number (355892313).

Almost surely, 2^1220202212 is an apocalyptic number.

It is an amenable number.

1220202212 is a deficient number, since it is larger than the sum of its proper divisors (915151666).

1220202212 is a wasteful number, since it uses less digits than its factorization.

1220202212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 305050557 (or 305050555 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 14.

The square root of 1220202212 is about 34931.3929295698. The cubic root of 1220202212 is about 1068.5887622793.

Adding to 1220202212 its reverse (2122020221), we get a palindrome (3342222433).

It can be divided in two parts, 122020221 and 2, that multiplied together give a palindrome (244040442).

The spelling of 1220202212 in words is "one billion, two hundred twenty million, two hundred two thousand, two hundred twelve".