3516748301221 has 4 divisors (see below), whose sum is σ = 3516757460352. Its totient is φ = 3516739142092.

The previous prime is 3516748301191. The next prime is 3516748301239. The reversal of 3516748301221 is 1221038476153.

It is a happy number.

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 3516748301221 - 2²⁹ = 3516211430309 is a prime.

It is a super-2 number, since 2×3516748301221² (a number of 26 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3516748301021) 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, 3977215 + ... + 4780348.

It is an arithmetic number, because the mean of its divisors is an integer number (879189365088).

Almost surely, 2^{3516748301221} is an apocalyptic number.

It is an amenable number.

3516748301221 is a deficient number, since it is larger than the sum of its proper divisors (9159131).

3516748301221 is an equidigital number, since it uses as much as digits as its factorization.

3516748301221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9159130.

The product of its (nonzero) digits is 241920, while the sum is 43.

The spelling of 3516748301221 in words is "three trillion, five hundred sixteen billion, seven hundred forty-eight million, three hundred one thousand, two hundred twenty-one".