1242212011222 has 48 divisors (see below), whose sum is σ = 2420368044192. Its totient is φ = 465560058240.

The previous prime is 1242212011199. The next prime is 1242212011223. The reversal of 1242212011222 is 2221102122421.

It is a junction number, because it is equal to n+sod(n) for n = 1242212011193 and 1242212011202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1242212011223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 9387679 + ... + 9519082.

It is an arithmetic number, because the mean of its divisors is an integer number (50424334254).

Almost surely, 2^{1242212011222} is an apocalyptic number.

1242212011222 is a deficient number, since it is larger than the sum of its proper divisors (1178156032970).

1242212011222 is a wasteful number, since it uses less digits than its factorization.

1242212011222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18906821 (or 18906802 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 22.

Adding to 1242212011222 its reverse (2221102122421), we get a palindrome (3463314133643).

The spelling of 1242212011222 in words is "one trillion, two hundred forty-two billion, two hundred twelve million, eleven thousand, two hundred twenty-two".