242121034012 has 24 divisors (see below), whose sum is σ = 497787301872. Its totient is φ = 101589244800.

The previous prime is 242121033991. The next prime is 242121034013. The reversal of 242121034012 is 210430121242.

242121034012 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×242121034012² (a number of 24 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (242121034013) 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 7 ways as a sum of consecutive naturals, for example, 211643689 + ... + 211644832.

It is an arithmetic number, because the mean of its divisors is an integer number (20741137578).

Almost surely, 2^242121034012 is an apocalyptic number.

242121034012 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

242121034012 is an abundant number, since it is smaller than the sum of its proper divisors (255666267860).

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

242121034012 is a wasteful number, since it uses less digits than its factorization.

242121034012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 423288549 (or 423288547 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 22.

Adding to 242121034012 its reverse (210430121242), we get a palindrome (452551155254).

The spelling of 242121034012 in words is "two hundred forty-two billion, one hundred twenty-one million, thirty-four thousand, twelve".