1352331361021 has 8 divisors (see below), whose sum is σ = 1422293727744. Its totient is φ = 1284015167760.

The previous prime is 1352331361019. The next prime is 1352331361061. The reversal of 1352331361021 is 1201631332531.

It is a happy number.

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 1352331361021 - 2¹ = 1352331361019 is a prime.

It is a super-2 number, since 2×1352331361021² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1352331361061) 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, 411541681 + ... + 411544966.

It is an arithmetic number, because the mean of its divisors is an integer number (177786715968).

Almost surely, 2^{1352331361021} is an apocalyptic number.

It is an amenable number.

1352331361021 is a deficient number, since it is larger than the sum of its proper divisors (69962366723).

1352331361021 is an equidigital number, since it uses as much as digits as its factorization.

1352331361021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 823086731.

The product of its (nonzero) digits is 9720, while the sum is 31.

Adding to 1352331361021 its reverse (1201631332531), we get a palindrome (2553962693552).

The spelling of 1352331361021 in words is "one trillion, three hundred fifty-two billion, three hundred thirty-one million, three hundred sixty-one thousand, twenty-one".