121154552044240 has 320 divisors, whose sum is σ = 334282151073024. Its totient is φ = 40255488000000.

The previous prime is 121154552044223. The next prime is 121154552044241. The reversal of 121154552044240 is 42440255451121.

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 = 121154552044193 and 121154552044202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121154552044241) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 6760470480 + ... + 6760488400.

Almost surely, 2^{121154552044240} is an apocalyptic number.

121154552044240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 121154552044240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (167141075536512).

121154552044240 is an abundant number, since it is smaller than the sum of its proper divisors (213127599028784).

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

121154552044240 is a wasteful number, since it uses less digits than its factorization.

121154552044240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23910 (or 23904 counting only the distinct ones).

The product of its (nonzero) digits is 256000, while the sum is 40.

The spelling of 121154552044240 in words is "one hundred twenty-one trillion, one hundred fifty-four billion, five hundred fifty-two million, forty-four thousand, two hundred forty".