121354032154521 has 8 divisors (see below), whose sum is σ = 164547840209760. Its totient is φ = 79531456101152.

The previous prime is 121354032154489. The next prime is 121354032154567. The reversal of 121354032154521 is 125451230453121.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 121354032154521 - 2⁵ = 121354032154489 is a prime.

It is a super-2 number, since 2×121354032154521² (a number of 29 digits) contains 22 as substring.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 121354032154521.

It is not an unprimeable number, because it can be changed into a prime (121354032153521) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 342808000260 + ... + 342808000613.

It is an arithmetic number, because the mean of its divisors is an integer number (20568480026220).

Almost surely, 2^{121354032154521} is an apocalyptic number.

It is an amenable number.

121354032154521 is a deficient number, since it is larger than the sum of its proper divisors (43193808055239).

121354032154521 is an equidigital number, since it uses as much as digits as its factorization.

121354032154521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 685616000935.

The product of its (nonzero) digits is 144000, while the sum is 39.

The spelling of 121354032154521 in words is "one hundred twenty-one trillion, three hundred fifty-four billion, thirty-two million, one hundred fifty-four thousand, five hundred twenty-one".