121234340000 has 120 divisors (see below), whose sum is σ = 301212696708. Its totient is φ = 48012800000.

The previous prime is 121234339997. The next prime is 121234340023. The reversal of 121234340000 is 43432121.

It can be written as a sum of positive squares in 10 ways, for example, as 5843685136 + 115390654864 = 76444^2 + 339692^2 .

It is a Harshad number since it is a multiple of its sum of digits (20).

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 1989992 + ... + 2050008.

Almost surely, 2^121234340000 is an apocalyptic number.

121234340000 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 121234340000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (150606348354).

121234340000 is an abundant number, since it is smaller than the sum of its proper divisors (179978356708).

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

121234340000 is an equidigital number, since it uses as much as digits as its factorization.

121234340000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60148 (or 60125 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 20.

Adding to 121234340000 its reverse (43432121), we get a palindrome (121277772121).

The spelling of 121234340000 in words is "one hundred twenty-one billion, two hundred thirty-four million, three hundred forty thousand".