1356052132021 has 4 divisors (see below), whose sum is σ = 1356204011500. Its totient is φ = 1355900252544.

The previous prime is 1356052132003. The next prime is 1356052132103. The reversal of 1356052132021 is 1202312506531.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 26091940900 + 1329960191121 = 161530^2 + 1153239^2 .

It is a cyclic number.

It is not a de Polignac number, because 1356052132021 - 2³⁹ = 806296318133 is a prime.

It is a super-2 number, since 2×1356052132021² (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 (1356052232021) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 75926346 + ... + 75944203.

It is an arithmetic number, because the mean of its divisors is an integer number (339051002875).

Almost surely, 2^{1356052132021} is an apocalyptic number.

It is an amenable number.

1356052132021 is a deficient number, since it is larger than the sum of its proper divisors (151879479).

1356052132021 is an equidigital number, since it uses as much as digits as its factorization.

1356052132021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 151879478.

The product of its (nonzero) digits is 10800, while the sum is 31.

Adding to 1356052132021 its reverse (1202312506531), we get a palindrome (2558364638552).

The spelling of 1356052132021 in words is "one trillion, three hundred fifty-six billion, fifty-two million, one hundred thirty-two thousand, twenty-one".