1352506721021 has 8 divisors (see below), whose sum is σ = 1355167571904. Its totient is φ = 1349848430560.

The previous prime is 1352506721009. The next prime is 1352506721053. The reversal of 1352506721021 is 1201276052531.

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 1352506721021 - 2¹⁰ = 1352506719997 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 (1352506721921) 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, 419126 + ... + 1697256.

It is an arithmetic number, because the mean of its divisors is an integer number (169395946488).

Almost surely, 2^{1352506721021} is an apocalyptic number.

It is an amenable number.

1352506721021 is a deficient number, since it is larger than the sum of its proper divisors (2660850883).

1352506721021 is a wasteful number, since it uses less digits than its factorization.

1352506721021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1280211.

The product of its (nonzero) digits is 25200, while the sum is 35.

The spelling of 1352506721021 in words is "one trillion, three hundred fifty-two billion, five hundred six million, seven hundred twenty-one thousand, twenty-one".