121541363633 has 4 divisors (see below), whose sum is σ = 121784934000. Its totient is φ = 121297793268.

The previous prime is 121541363621. The next prime is 121541363659. The reversal of 121541363633 is 336363145121.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 121541363633 - 2¹⁰ = 121541362609 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121541363033) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 121784435 + ... + 121785432.

It is an arithmetic number, because the mean of its divisors is an integer number (30446233500).

Almost surely, 2^121541363633 is an apocalyptic number.

It is an amenable number.

121541363633 is a deficient number, since it is larger than the sum of its proper divisors (243570367).

121541363633 is an equidigital number, since it uses as much as digits as its factorization.

121541363633 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 243570366.

The product of its digits is 116640, while the sum is 38.

The spelling of 121541363633 in words is "one hundred twenty-one billion, five hundred forty-one million, three hundred sixty-three thousand, six hundred thirty-three".