1021549004941 has 4 divisors (see below), whose sum is σ = 1025823268800. Its totient is φ = 1017274741084.

The previous prime is 1021549004851. The next prime is 1021549004951. The reversal of 1021549004941 is 1494009451201.

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 1021549004941 - 2¹⁵ = 1021548972173 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1021549004894 and 1021549004903.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1021549004951) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2137131571 + ... + 2137132048.

It is an arithmetic number, because the mean of its divisors is an integer number (256455817200).

Almost surely, 2^{1021549004941} is an apocalyptic number.

It is an amenable number.

1021549004941 is a deficient number, since it is larger than the sum of its proper divisors (4274263859).

1021549004941 is an equidigital number, since it uses as much as digits as its factorization.

1021549004941 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4274263858.

The product of its (nonzero) digits is 51840, while the sum is 40.

The spelling of 1021549004941 in words is "one trillion, twenty-one billion, five hundred forty-nine million, four thousand, nine hundred forty-one".