1210221212 has 12 divisors (see below), whose sum is σ = 2152607016. Its totient is φ = 595190640.

The previous prime is 1210221203. The next prime is 1210221241. The reversal of 1210221212 is 2121220121.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2479718 + ... + 2480205.

It is an arithmetic number, because the mean of its divisors is an integer number (179383918).

Almost surely, 2^1210221212 is an apocalyptic number.

It is an amenable number.

1210221212 is a deficient number, since it is larger than the sum of its proper divisors (942385804).

1210221212 is a wasteful number, since it uses less digits than its factorization.

1210221212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4959988 (or 4959986 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 14.

The square root of 1210221212 is about 34788.2338154727. The cubic root of 1210221212 is about 1065.6671705513.

Adding to 1210221212 its reverse (2121220121), we get a palindrome (3331441333).

The spelling of 1210221212 in words is "one billion, two hundred ten million, two hundred twenty-one thousand, two hundred twelve".