1353352070221 has 4 divisors (see below), whose sum is σ = 1353360316444. Its totient is φ = 1353343824000.

The previous prime is 1353352070197. The next prime is 1353352070249. The reversal of 1353352070221 is 1220702533531.

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 196372173321 + 1156979896900 = 443139^2 + 1075630^2 .

It is a cyclic number.

It is not a de Polignac number, because 1353352070221 - 2⁷ = 1353352070093 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 (1353352070921) 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, 3871830 + ... + 4206871.

It is an arithmetic number, because the mean of its divisors is an integer number (338340079111).

Almost surely, 2^{1353352070221} is an apocalyptic number.

It is an amenable number.

1353352070221 is a deficient number, since it is larger than the sum of its proper divisors (8246223).

1353352070221 is an equidigital number, since it uses as much as digits as its factorization.

1353352070221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8246222.

The product of its (nonzero) digits is 37800, while the sum is 34.

The spelling of 1353352070221 in words is "one trillion, three hundred fifty-three billion, three hundred fifty-two million, seventy thousand, two hundred twenty-one".