1135435415221 has 4 divisors (see below), whose sum is σ = 1141708539244. Its totient is φ = 1129162291200.

The previous prime is 1135435415189. The next prime is 1135435415251. The reversal of 1135435415221 is 1225145345311.

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 119189967121 + 1016245448100 = 345239^2 + 1008090^2 .

It is a cyclic number.

It is not a de Polignac number, because 1135435415221 - 2⁵ = 1135435415189 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 (1135435415251) 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, 3136561740 + ... + 3136562101.

It is an arithmetic number, because the mean of its divisors is an integer number (285427134811).

Almost surely, 2^{1135435415221} is an apocalyptic number.

It is an amenable number.

1135435415221 is a deficient number, since it is larger than the sum of its proper divisors (6273124023).

1135435415221 is an equidigital number, since it uses as much as digits as its factorization.

1135435415221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6273124022.

The product of its digits is 72000, while the sum is 37.

The spelling of 1135435415221 in words is "one trillion, one hundred thirty-five billion, four hundred thirty-five million, four hundred fifteen thousand, two hundred twenty-one".