1356562740221 has 8 divisors (see below), whose sum is σ = 1537803916320. Its totient is φ = 1186305877872.

The previous prime is 1356562740209. The next prime is 1356562740241. The reversal of 1356562740221 is 1220472656531.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1356562740221 - 2¹⁸ = 1356562478077 is a prime.

It is a super-2 number, since 2×1356562740221² (a number of 25 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 (1356562740241) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2746078175 + ... + 2746078668.

It is an arithmetic number, because the mean of its divisors is an integer number (192225489540).

Almost surely, 2^{1356562740221} is an apocalyptic number.

It is an amenable number.

1356562740221 is a deficient number, since it is larger than the sum of its proper divisors (181241176099).

1356562740221 is a wasteful number, since it uses less digits than its factorization.

1356562740221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5492156875.

The product of its (nonzero) digits is 604800, while the sum is 44.

The spelling of 1356562740221 in words is "one trillion, three hundred fifty-six billion, five hundred sixty-two million, seven hundred forty thousand, two hundred twenty-one".