12121496730 has 48 divisors (see below), whose sum is σ = 36018163584. Its totient is φ = 2770627680.

The previous prime is 12121496729. The next prime is 12121496741. The reversal of 12121496730 is 3769412121.

12121496730 is a `hidden beast` number, since 12 + 121 + 496 + 7 + 30 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 9619606 + ... + 9620865.

It is an arithmetic number, because the mean of its divisors is an integer number (750378408).

Almost surely, 2^12121496730 is an apocalyptic number.

12121496730 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12121496730 is an abundant number, since it is smaller than the sum of its proper divisors (23896666854).

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

12121496730 is a wasteful number, since it uses less digits than its factorization.

12121496730 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19240491 (or 19240488 counting only the distinct ones).

The product of its (nonzero) digits is 18144, while the sum is 36.

The spelling of 12121496730 in words is "twelve billion, one hundred twenty-one million, four hundred ninety-six thousand, seven hundred thirty".