121055435040 has 96 divisors (see below), whose sum is σ = 381490373376. Its totient is φ = 32267417600.

The previous prime is 121055435029. The next prime is 121055435047. The reversal of 121055435040 is 40534550121.

It is a tau number, because it is divible by the number of its divisors (96).

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 121055434989 and 121055435007.

It is not an unprimeable number, because it can be changed into a prime (121055435047) 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 15 ways as a sum of consecutive naturals, for example, 1074844 + ... + 1182116.

It is an arithmetic number, because the mean of its divisors is an integer number (3973858056).

Almost surely, 2^121055435040 is an apocalyptic number.

121055435040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121055435040 is an abundant number, since it is smaller than the sum of its proper divisors (260434938336).

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

121055435040 is a wasteful number, since it uses less digits than its factorization.

121055435040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 109642 (or 109634 counting only the distinct ones).

The product of its (nonzero) digits is 12000, while the sum is 30.

Adding to 121055435040 its reverse (40534550121), we get a palindrome (161589985161).

The spelling of 121055435040 in words is "one hundred twenty-one billion, fifty-five million, four hundred thirty-five thousand, forty".