121010043000 has 384 divisors, whose sum is σ = 474289320960. Its totient is φ = 25144416000.

The previous prime is 121010042981. The next prime is 121010043019. The reversal of 121010043000 is 340010121.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (121010042981) and next prime (121010043019).

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 2517189 + ... + 2564811.

It is an arithmetic number, because the mean of its divisors is an integer number (1235128440).

Almost surely, 2^121010043000 is an apocalyptic number.

121010043000 is a gapful number since it is divisible by the number (10) 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 121010043000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (237144660480).

121010043000 is an abundant number, since it is smaller than the sum of its proper divisors (353279277960).

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

121010043000 is a wasteful number, since it uses less digits than its factorization.

121010043000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47676 (or 47651 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 12.

Adding to 121010043000 its reverse (340010121), we get a palindrome (121350053121).

The spelling of 121010043000 in words is "one hundred twenty-one billion, ten million, forty-three thousand".