121201849528549 has 4 divisors (see below), whose sum is σ = 122908917831840. Its totient is φ = 119494781225260.

The previous prime is 121201849528537. The next prime is 121201849528559. The reversal of 121201849528549 is 945825948102121.

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 121201849528549 - 2⁴¹ = 119002826272997 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121201849528519) 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, 853534151539 + ... + 853534151680.

It is an arithmetic number, because the mean of its divisors is an integer number (30727229457960).

Almost surely, 2^{121201849528549} is an apocalyptic number.

It is an amenable number.

121201849528549 is a deficient number, since it is larger than the sum of its proper divisors (1707068303291).

121201849528549 is an equidigital number, since it uses as much as digits as its factorization.

121201849528549 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1707068303290.

The product of its (nonzero) digits is 16588800, while the sum is 61.

The spelling of 121201849528549 in words is "one hundred twenty-one trillion, two hundred one billion, eight hundred forty-nine million, five hundred twenty-eight thousand, five hundred forty-nine".