1212421203124 has 24 divisors (see below), whose sum is σ = 2127815827200. Its totient is φ = 604474092960.

The previous prime is 1212421203107. The next prime is 1212421203127. The reversal of 1212421203124 is 4213021242121.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1212421203127) 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, 24213234 + ... + 24263254.

It is an arithmetic number, because the mean of its divisors is an integer number (88658992800).

Almost surely, 2^{1212421203124} is an apocalyptic number.

It is an amenable number.

1212421203124 is a deficient number, since it is larger than the sum of its proper divisors (915394624076).

1212421203124 is a wasteful number, since it uses less digits than its factorization.

1212421203124 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67263 (or 67261 counting only the distinct ones).

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

Adding to 1212421203124 its reverse (4213021242121), we get a palindrome (5425442445245).

The spelling of 1212421203124 in words is "one trillion, two hundred twelve billion, four hundred twenty-one million, two hundred three thousand, one hundred twenty-four".