1212122213242 has 8 divisors (see below), whose sum is σ = 1880879296500. Its totient is φ = 585162447744.

The previous prime is 1212122213231. The next prime is 1212122213243. The reversal of 1212122213242 is 2423122212121.

It can be written as a sum of positive squares in 2 ways, for example, as 1207095545041 + 5026668201 = 1098679^2 + 70899^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (1212122213243) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10449329367 + ... + 10449329482.

Almost surely, 2^{1212122213242} is an apocalyptic number.

1212122213242 is a deficient number, since it is larger than the sum of its proper divisors (668757083258).

1212122213242 is a wasteful number, since it uses less digits than its factorization.

1212122213242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20898658880.

The product of its digits is 1536, while the sum is 25.

Adding to 1212122213242 its reverse (2423122212121), we get a palindrome (3635244425363).

The spelling of 1212122213242 in words is "one trillion, two hundred twelve billion, one hundred twenty-two million, two hundred thirteen thousand, two hundred forty-two".