12154222080 has 1920 divisors, whose sum is σ = 61772046336. Its totient is φ = 2123366400.

The previous prime is 12154222037. The next prime is 12154222099. The reversal of 12154222080 is 8022245121.

12154222080 is a `hidden beast` number, since 1 + 21 + 542 + 2 + 20 + 80 = 666.

It is a tau number, because it is divible by the number of its divisors (1920).

It is a super-2 number, since 2×12154222080² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 392071665 + ... + 392071695.

Almost surely, 2^12154222080 is an apocalyptic number.

12154222080 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 12154222080, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30886023168).

12154222080 is an abundant number, since it is smaller than the sum of its proper divisors (49617824256).

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

12154222080 is a wasteful number, since it uses less digits than its factorization.

12154222080 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 108 (or 89 counting only the distinct ones).

The product of its (nonzero) digits is 2560, while the sum is 27.

The spelling of 12154222080 in words is "twelve billion, one hundred fifty-four million, two hundred twenty-two thousand, eighty".