1212201222 has 16 divisors (see below), whose sum is σ = 2453613120. Its totient is φ = 399198632.

The previous prime is 1212201217. The next prime is 1212201227. The reversal of 1212201222 is 2221022121.

It is an interprime number because it is at equal distance from previous prime (1212201217) and next prime (1212201227).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1212201227) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1216572 + ... + 1217567.

It is an arithmetic number, because the mean of its divisors is an integer number (153350820).

Almost surely, 2^1212201222 is an apocalyptic number.

1212201222 is an abundant number, since it is smaller than the sum of its proper divisors (1241411898).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1212201222 is a wasteful number, since it uses less digits than its factorization.

1212201222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2434227.

The product of its (nonzero) digits is 64, while the sum is 15.

The square root of 1212201222 is about 34816.6802265811. The cubic root of 1212201222 is about 1066.2480235823.

Adding to 1212201222 its reverse (2221022121), we get a palindrome (3433223343).

The spelling of 1212201222 in words is "one billion, two hundred twelve million, two hundred one thousand, two hundred twenty-two".