121100253024540 has 96 divisors (see below), whose sum is σ = 339359341124160. Its totient is φ = 32266869538816.

The previous prime is 121100253024511. The next prime is 121100253024559. The reversal of 121100253024540 is 45420352001121.

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 = 121100253024498 and 121100253024507.

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, 802800964 + ... + 802951796.

It is an arithmetic number, because the mean of its divisors is an integer number (3534993136710).

Almost surely, 2^{121100253024540} is an apocalyptic number.

121100253024540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121100253024540 is an abundant number, since it is smaller than the sum of its proper divisors (218259088099620).

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

121100253024540 is a wasteful number, since it uses less digits than its factorization.

121100253024540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 161751 (or 161749 counting only the distinct ones).

The product of its (nonzero) digits is 9600, while the sum is 30.

The spelling of 121100253024540 in words is "one hundred twenty-one trillion, one hundred billion, two hundred fifty-three million, twenty-four thousand, five hundred forty".