121067740840 has 64 divisors (see below), whose sum is σ = 290194228800. Its totient is φ = 45325527552.

The previous prime is 121067740817. The next prime is 121067740853. The reversal of 121067740840 is 48047760121.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a junction number, because it is equal to n+sod(n) for n = 121067740793 and 121067740802.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 896557 + ... + 1022716.

It is an arithmetic number, because the mean of its divisors is an integer number (4534284825).

Almost surely, 2^121067740840 is an apocalyptic number.

121067740840 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121067740840 is an abundant number, since it is smaller than the sum of its proper divisors (169126487960).

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

121067740840 is a wasteful number, since it uses less digits than its factorization.

121067740840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1919386 (or 1919382 counting only the distinct ones).

The product of its (nonzero) digits is 75264, while the sum is 40.

The spelling of 121067740840 in words is "one hundred twenty-one billion, sixty-seven million, seven hundred forty thousand, eight hundred forty".