121530290906600 has 24 divisors (see below), whose sum is σ = 282557926358310. Its totient is φ = 48612116362560.

The previous prime is 121530290906597. The next prime is 121530290906611. The reversal of 121530290906600 is 6609092035121.

It can be written as a sum of positive squares in 3 ways, for example, as 116503484767684 + 5026806138916 = 10793678^2 + 2242054^2 .

It is a super-2 number, since 2×121530290906600² (a number of 29 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 303825727067 + ... + 303825727466.

Almost surely, 2^{121530290906600} is an apocalyptic number.

121530290906600 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121530290906600 is an abundant number, since it is smaller than the sum of its proper divisors (161027635451710).

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

121530290906600 is a wasteful number, since it uses less digits than its factorization.

121530290906600 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 607651454549 (or 607651454540 counting only the distinct ones).

The product of its (nonzero) digits is 174960, while the sum is 44.

The spelling of 121530290906600 in words is "one hundred twenty-one trillion, five hundred thirty billion, two hundred ninety million, nine hundred six thousand, six hundred".