1212102242 has 16 divisors (see below), whose sum is σ = 1965247872. Its totient is φ = 557364240.

The previous prime is 1212102187. The next prime is 1212102247. The reversal of 1212102242 is 2422012121.

It is a super-2 number, since 2×1212102242² = 2938383690122853128, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1212102242.

It is not an unprimeable number, because it can be changed into a prime (1212102247) 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, 78968 + ... + 93059.

It is an arithmetic number, because the mean of its divisors is an integer number (122827992).

Almost surely, 2^1212102242 is an apocalyptic number.

1212102242 is a deficient number, since it is larger than the sum of its proper divisors (753145630).

1212102242 is a wasteful number, since it uses less digits than its factorization.

1212102242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 172313.

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

The square root of 1212102242 is about 34815.2587524493. The cubic root of 1212102242 is about 1066.2190019699.

Adding to 1212102242 its reverse (2422012121), we get a palindrome (3634114363).

The spelling of 1212102242 in words is "one billion, two hundred twelve million, one hundred two thousand, two hundred forty-two".