121306035540 has 24 divisors (see below), whose sum is σ = 339656899680. Its totient is φ = 32348276128.

The previous prime is 121306035527. The next prime is 121306035589. The reversal of 121306035540 is 45530603121.

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 = 121306035498 and 121306035507.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1010883570 + ... + 1010883689.

It is an arithmetic number, because the mean of its divisors is an integer number (14152370820).

Almost surely, 2^121306035540 is an apocalyptic number.

121306035540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121306035540 is an abundant number, since it is smaller than the sum of its proper divisors (218350864140).

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

121306035540 is a wasteful number, since it uses less digits than its factorization.

121306035540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2021767271 (or 2021767269 counting only the distinct ones).

The product of its (nonzero) digits is 10800, while the sum is 30.

Adding to 121306035540 its reverse (45530603121), we get a palindrome (166836638661).

The spelling of 121306035540 in words is "one hundred twenty-one billion, three hundred six million, thirty-five thousand, five hundred forty".