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121080120000 = 2635471761139
BaseRepresentation
bin111000011000011110…
…0000000001011000000
3102120112021121101120220
41300300330000023000
53440433002320000
6131342355103040
711514323016210
oct1606074001300
9376467541526
10121080120000
1147393631284
121b5715a1a80
13b557bc7428
145c0898c240
153239c111a0
hex1c30f002c0

121080120000 has 1120 divisors, whose sum is σ = 495903260160. Its totient is φ = 25436160000.

The previous prime is 121080119987. The next prime is 121080120011. The reversal of 121080120000 is 21080121.

It is a tau number, because it is divible by the number of its divisors (1120).

It is a Harshad number since it is a multiple of its sum of digits (15).

It is an unprimeable number.

It is a polite number, since it can be written in 159 ways as a sum of consecutive naturals, for example, 871079931 + ... + 871080069.

It is an arithmetic number, because the mean of its divisors is an integer number (442770768).

Almost surely, 2121080120000 is an apocalyptic number.

121080120000 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 121080120000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (247951630080).

121080120000 is an abundant number, since it is smaller than the sum of its proper divisors (374823140160).

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

121080120000 is a wasteful number, since it uses less digits than its factorization.

121080120000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 259 (or 234 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 15.

The spelling of 121080120000 in words is "one hundred twenty-one billion, eighty million, one hundred twenty thousand".