121611104340 has 96 divisors (see below), whose sum is σ = 375144739200. Its totient is φ = 29189568000.

The previous prime is 121611104327. The next prime is 121611104401. The reversal of 121611104340 is 43401116121.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 121611104340.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 845515 + ... + 978834.

It is an arithmetic number, because the mean of its divisors is an integer number (3907757700).

Almost surely, 2^121611104340 is an apocalyptic number.

121611104340 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121611104340 is an abundant number, since it is smaller than the sum of its proper divisors (253533634860).

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

121611104340 is a wasteful number, since it uses less digits than its factorization.

121611104340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1824473 (or 1824471 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 24.

The spelling of 121611104340 in words is "one hundred twenty-one billion, six hundred eleven million, one hundred four thousand, three hundred forty".