121530155335 has 16 divisors (see below), whose sum is σ = 153685733760. Its totient is φ = 92002690080.

The previous prime is 121530155333. The next prime is 121530155353. The reversal of 121530155335 is 533551035121.

It is not a de Polignac number, because 121530155335 - 2¹ = 121530155333 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 121530155335.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121530155333) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 640501 + ... + 808270.

It is an arithmetic number, because the mean of its divisors is an integer number (9605358360).

Almost surely, 2^121530155335 is an apocalyptic number.

121530155335 is a deficient number, since it is larger than the sum of its proper divisors (32155578425).

121530155335 is a wasteful number, since it uses less digits than its factorization.

121530155335 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1449678.

The product of its (nonzero) digits is 33750, while the sum is 34.

The spelling of 121530155335 in words is "one hundred twenty-one billion, five hundred thirty million, one hundred fifty-five thousand, three hundred thirty-five".