121034423440 has 80 divisors (see below), whose sum is σ = 331980180480. Its totient is φ = 40158881280.

The previous prime is 121034423437. The next prime is 121034423449. The reversal of 121034423440 is 44324430121.

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a junction number, because it is equal to n+sod(n) for n = 121034423399 and 121034423408.

It is not an unprimeable number, because it can be changed into a prime (121034423449) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3468655 + ... + 3503374.

It is an arithmetic number, because the mean of its divisors is an integer number (4149752256).

Almost surely, 2^121034423440 is an apocalyptic number.

121034423440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121034423440 is an abundant number, since it is smaller than the sum of its proper divisors (210945757040).

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

121034423440 is a wasteful number, since it uses less digits than its factorization.

121034423440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6972080 (or 6972074 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 28.

Adding to 121034423440 its reverse (44324430121), we get a palindrome (165358853561).

The spelling of 121034423440 in words is "one hundred twenty-one billion, thirty-four million, four hundred twenty-three thousand, four hundred forty".