121300507649 has 4 divisors (see below), whose sum is σ = 121419547440. Its totient is φ = 121181467860.

The previous prime is 121300507639. The next prime is 121300507661. The reversal of 121300507649 is 946705003121.

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 121300507649 - 2⁴ = 121300507633 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (121300507639) 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, 59518367 + ... + 59520404.

It is an arithmetic number, because the mean of its divisors is an integer number (30354886860).

Almost surely, 2^121300507649 is an apocalyptic number.

It is an amenable number.

121300507649 is a deficient number, since it is larger than the sum of its proper divisors (119039791).

121300507649 is a wasteful number, since it uses less digits than its factorization.

121300507649 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 119039790.

The product of its (nonzero) digits is 45360, while the sum is 38.

The spelling of 121300507649 in words is "one hundred twenty-one billion, three hundred million, five hundred seven thousand, six hundred forty-nine".