121043712 has 54 divisors (see below), whose sum is σ = 322966308. Its totient is φ = 40246272.

The previous prime is 121043707. The next prime is 121043717. The reversal of 121043712 is 217340121.

It is an interprime number because it is at equal distance from previous prime (121043707) and next prime (121043717).

It is not an unprimeable number, because it can be changed into a prime (121043717) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 304698 + ... + 305094.

Almost surely, 2^121043712 is an apocalyptic number.

121043712 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 121043712, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (161483154).

121043712 is an abundant number, since it is smaller than the sum of its proper divisors (201922596).

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

121043712 is an frugal number, since it uses more digits than its factorization.

121043712 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 813 (or 402 counting only the distinct ones).

The product of its (nonzero) digits is 336, while the sum is 21.

The square root of 121043712 is about 11001.9867296775. The cubic root of 121043712 is about 494.6682973124.

Adding to 121043712 its reverse (217340121), we get a palindrome (338383833).

The spelling of 121043712 in words is "one hundred twenty-one million, forty-three thousand, seven hundred twelve".