1351675426221 has 10 divisors (see below), whose sum is σ = 2019169463982. Its totient is φ = 901116950760.

The previous prime is 1351675426201. The next prime is 1351675426229. The reversal of 1351675426221 is 1226245761531.

1351675426221 is a `hidden beast` number, since 1 + 3 + 5 + 16 + 7 + 5 + 4 + 2 + 622 + 1 = 666.

It can be written as a sum of positive squares in only one way, i.e., 1351664337321 + 11088900 = 1162611^2 + 3330^2 .

It is not a de Polignac number, because 1351675426221 - 2¹⁴ = 1351675409837 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1351675426229) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 8343675390 + ... + 8343675551.

Almost surely, 2^{1351675426221} is an apocalyptic number.

It is an amenable number.

1351675426221 is a deficient number, since it is larger than the sum of its proper divisors (667494037761).

1351675426221 is an equidigital number, since it uses as much as digits as its factorization.

1351675426221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16687350953 (or 16687350944 counting only the distinct ones).

The product of its digits is 604800, while the sum is 45.

The spelling of 1351675426221 in words is "one trillion, three hundred fifty-one billion, six hundred seventy-five million, four hundred twenty-six thousand, two hundred twenty-one".